Pests and Diseases From Acer Gall Mites To Cytospora Canker


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A
Common Name:- Acer Gall Mites
P_acerglmite Maple Bladdergall Mite (Vasates quadripedes).
There are many mites which causes galls on Maple(Acer species). These mites are not host specific and other trees are also attacked. The gall mites are microscpic and can only be seen under a mi...
Caused by:- Various Gall Mites
Control:- Light infestation can be controlled by picking off the individual l...

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Common Name:- Acorn Gall Wasp
P_acornglwsp The Acorn Gall wasp(Andricus quercuscalicis) causes Knopper Galls of Oak(Quercus) acorns. The wasp lays its egg on a developing acorn in early Summer. When the egg hatches the grub secretes chemicals which causes the acorn to develop into a gall. ...
Caused by:- The Wasp Andricus quercuscalicis
Control:- Unless the infection is great spraying is not necessary as most Oak...

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Common Name:- Adelgid
P_adelgids Adelgids are aphid-like insects in the family Adelgidae that primarily feeds on pines(Pinus), Spruce(Picea), Larch(Larix), DouglasFir(pseudotsuga menziesii) and Silver Fir(Abies). Adelgids feed by sucking their host plants sap. Infestations can ca...
Caused by:- Various Adelgid insects
Control:- Control measures depend on the kind of Adelgid and each type needs ...

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Common Name:- Alder Sucker
P_alderskr In Spring and Summer a fluffy white waxy substance covering a predominantly green, with dark markings aphids appears on the leaves and shoot tips of Alders. It is a sap-feeding insects 2-3 mm long. Nymphs have wide, flat bodies, large eyes and dar...
Caused by:- The Aphid Psylla alni
Control:- If necessary spray with an insecticide or wash them off with very s...

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Common Name:- Algae
P_algae1 Powdery green deposits on the leaves and trunk of plants, which can be wiped off leaving no discolouration. The plant growth is not impaired. In a forest the direction can be ascertain by looking at which side of the trunk the algae is on because ...
Caused by:- Single cellular plants
Control:- No control is necessary as the Algae is harmless. If it is unsightl...

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Common Name:- Alternaria Leaf Spot
P_alternaria Alternaria Leaf Spot is caused by several species of Alternaria fungus and attack many plants. Leaf spots vary in size from small dark circular spots up to 3 cm in diameter depending on the species and plant involved. They typically begin as small...
Caused by:- Several species of Alternaria fungus
Control:- Fungicidal applications applied as foliar sprays will control this ...

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Common Name:- American Gooseberry Mildew
P_amergoosemildew1 There are two mildew that affects gooseberries and related plants as well as Botritis fungi. One is the American(Sphaerotheca mors-uvae) and the other is the European(Microsphaera grossulariae). American Gooseberry Mildew is a much more vigorous f...
Caused by:- The Fungus Sphaerotheca mors-uvae
Control:- This fungus is encouraged by stagnant air around the branches and b...

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Common Name:- Anemone Rust
P_anemone1 The top of leaves become discoloured by yellow-orange spots found in mid-summer onwards. The underside of the leaf is covered with numerous brown/black markings. In extreme cases the whole plant will be affected and the leaves fall early. The fun...
Caused by:- The Fungus Tranzschelia pruni-spinosa
Control:- This disease is common and widespread. Consistent attacks may weake...

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Common Name:- Anemone Smut
P_anemonesmut There are many smut fungi that affect several plants including cereal crops like wheat. The main smut that affects Anemones is Urocystis anemones, but there are other smut fungi that can infect Anemones. The Smut spore masses develop beneath the s...
Caused by:- Mainly the Fungus Urocystis anemones
Control:- Remove and destroy, burn if possible, affected plants and leaves b...

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Common Name:- Anthranose
P_anthracnose Anthracnose is a term given to plant diseases caused by fungi in the genus Colletotrichum which attacks many plants from grass, vegetables, fruits, and trees. Symptoms include small, elliptical black abnormal injury, less than 5 mm in diameter tha...
Caused by:- Various Colletotrichum Fungi Species
Control:- The best way to prevent infection by anthracnose disease is approac...

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Common Name:- Antirrhinum Rust
P_antirrhinumrust1 There are several thousands species of rust, most are specific to a particular host and as with all rust the full life cycle requires an alternation between two unrelated plant hosts, but in the UK only the stages on antirrhinums usually occur. Th...
Caused by:- The Fungus Puccina antirrhini
Control:- Spray with any good fungicide especially those containing containi...

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Common Name:- Ants
P_ants Ants do not attack the plant as such but farm the aphids which suck sap from the plant and excrete sugary honeydew on which the ants feed. Ants often protect the aphids from attack. Several species of ants including the Yellow meadow ant, Lasius f...
Caused by:- Several species of ants
Control:- Nest can be treated with various dusts or there are jels which are ...

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Common Name:- Aphids
P_aphids1 This picture shows one of e winged aphid which will fly off to lay eggs on another plant.
Aphids suck the sap from leaves and stems and secrete honeydew which makes the leaves below sticky with honeydew which is the sugary sap of the plant....
Caused by:- Several species of aphids
Control:- As an emergency quick solution I squish them between the fingers or...

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Common Name:- Apple and pear Canker
P_nectriacanker2 Areas of the bark sinks inwards. It is most often associated with a wound or bud. The bark changes colour and shrinks and cracks forming concentric rings of bark which easily peels off. As the fungus grows around the stems the upper branches and l...
Caused by:- The Fungus Nectria galligena
Control:- This fungus spreads mainly by wind blowing the spores in spring. Th...

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Common Name:- Apple Bitter Pit
P_aplbtrpit Apple Bitter Pit is not a pest as such, but a physiological reaction to calcium deficiency. It often occurs when there is an irregular supply of water, which prevents calcium being taken up and circulated around the tree.
It may not be due ...
Caused by:- Calcium Deficiency
Control:- Some cultivars are more susceptible than others.<br /> Spraying wi...

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Common Name:- Apple Blossom Weevil
P_appbloswevil1 The apple flower buds start to develop but the petals fail to open and turn brown.If these buds are pulled apart a white larvae or pupa is found. These buds do not produce fruit. This weevil lays its egg in the unopened buds during mid to late ...
Caused by:- The Weevil Anthonomus pomorum
Control:- Usually it is only light infestation and the tree recovers well. If...

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Common Name:- Apple Capsid
P_appcapsid1 Ripe apples have of yellowish-brown corky bumps or scabby areas on the skin. Leaves at the shoot tips may be distorted with small holes. This bright green sap feeding insects approximately 7mm long injects toxic saliva into the plant as it feeds ...
Caused by:- The insect Plesiocoris rugicollis
Control:- Usually the infestation can be ignored as the damage is only skin d...

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Common Name:- Apple Leaf Miner
P_appleafminer1 Silvery white to brown tracks appear in the foliage of Prunus and Malus trees. These lavae of this small moth chews its way between the epidermis of the leaf. When they are pupating hammock like cocoons are attached to the bottom of the leaf.
Caused by:- The Larvae of the moth Lyonettia clerkella
Control:- Usually this pest attacks too late in the season to affect mature t...

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Common Name:- Apple Powdery Mildew
P_apppowmildew1 Powdery mildews are one of the most widespread plant diseases. They affect virtually all kinds of plants from cereals and grasses, to fruit trees, and broad-leaved shade trees.
With Apple Powdery Mildew, which also attacks Pears and other s...
Caused by:- The Fungus Podeosphaera leucotricha
Control:- Improve circulation by pruning and keep the tree growing healthily ...

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Common Name:- Apple Sawfly
P_appsawfly1 The young fruits fall in early to mid summer with a maggot hole in the side of the fruit. The hole is usually filled with excrement of the larvaeMature fruits may be misapprehended with a ribbon like scar from the bottom to the middle of the fruit...
Caused by:- The Sawfly Hoplocampa testudinea
Control:- Pick off and destroy fruits that are misshaped or show early damage...

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Common Name:- Apple Scab
P_appscab1 Apple scab is most prevalent in mild, damp seasons. It is caused by the fungus Ventura inaequalis which is closely related to the Pear scab fungus Venturia pirina. The fungus overwinters on fallen leaves in the form of spores, which can be splashe...
Caused by:- The Fungus Venturia inaequalis
Control:- Good husbandry is essential in preventing this disease. Therefore r...

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Common Name:- Apple Sooty Blotch
P_appsootblotch1 Sooty greenish-black spots develop on fruit skin of apples and plums. The blotches do not enter the fruit and can be scraped off and the fruit development is not affected. This fungus overwinters on the stems and is common on trees growing in shad...
Caused by:- The Fungus Gloeodes pomigena
Control:- It is rarely necessary to control this fungus, but a winter tar was...

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Common Name:- Apple Sucker
P_appsucker1 Flattened pale green insects, up to 2mm long, infests the blossom trusses in the spring. They kill the flowers and prevent fruit setting. These sap feeding insects overwinter as eggs and hatch at leaf break in the spring. The adult stages resemble...
Caused by:- The insect Psylla mali
Control:- A winter tar wash and spraying, at the bud stage of the flowers, wi...

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Common Name:- Apple Water Core
P_aplewtrcore The exact cause of Apple Water Core is not known for sure, but it is not a pest problem as such, but a physiological problem caused by growing conditions. It is especially a problem where the weather is very hot followed by rain and cold nights ar...
Caused by:- Physicological Causes
Control:- Planting apple trees on well-drained sites with irrigating during p...

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Common Name:- Aquilegia Sawfly
P_aquilsawfly1 Caterpillar larvae approximately 18mm long eat the leaf margins if Aquilegias. They are pale green. and several generations are produced in one year. Only the leaf stalk and flower stems are left, which leave the plant weakened. They lay their egg...
Caused by:- The Sawfly Pristiphora aquilegiae
Control:- Spraying with a suitable insecticide unless you can pick them off a...

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Common Name:- Asparagus Beetle
P_asparabeetle1 Asparagus plants loose their leaves as the larvae and adults feed on the leaves and outer bark of stems. The shoots above the bark damage slowly dies. The adult beetle is black with six yellow markings on their wing cases and have a reddish thorax...
Caused by:- The Beetle Crioceris asparagi
Control:- Removal of the beetle if seen and spraying with a suitable insectic...

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Common Name:- Aster Wilt
P_asterwilt1 There are many pathovar of Fusarium many of which attack specific plants, bulbs, fruits and leaves. With aster the plants wilt and fall over. The base of the stems are blackened and sunk inwards a furry whitish-pink fungal growth often occurs on t...
Caused by:- The Fungus Fusariom oxysporum
Control:- Remove and dispose of affected plants and soil around the plants. I...

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Common Name:- Azalea Bark Scale
P_azaleabarkscale Azalea Bark Scale Acanthococcus azaleae (Eriococcus azaleae) which belongs to the family Eriococcidae prefers azalea or rhododendron but can infest hawthorn, andromeda, maple, willow, poplar, willow and ornamental cherry trees and other plants. F...
Caused by:- The Scale insect Acanthococcus azaleae
Control:- There are biological predators that can be used to control this pes...

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Common Name:- Azalea Cottony Scale
P_azaleacottscale Azalea Cottony Scale can infest holly, yew, euonymus, maple, and other plants. Females are approximately 1/8-inch long with white felt-like sacs that are secreted in April/May which is where the eggs are laid in the spring and hatch from June to J...
Caused by:- The Scale Insect Pulvinaria floccifera
Control:- A wash with oily insecticides or a soap wash will kill pests and eg...

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Common Name:- Azalea Gall
P_azaleagall1 Azalea is caused by the fungus Exobasidium vaccinii. Pale green growths appear instead of leaves, petals, branch tips and seed pods on azaleas and Rhododendrums. Sometimes they are pinkish-red. The galls later turn powdery white as spores develop ...
Caused by:- The Fungus Exobasidium vaccinii
Control:- Remove galls before spores form and spray with a suitable insectici...

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Common Name:- Azalea Whitefly
P_azaleawhitefly1 Small white spots and small white flies on the underside of leaves is an indication of infestation of Azalea Whitefly (Pealius azaleae.) The white winged insects live on the underside of the leaves of azaleas. They suck the sap and extrude honeyde...
Caused by:- The insect Pealius azaleae
Control:- Spray with a suitable insecticide especially when the adults are pr...

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B
Common Name:- Bacteria
P_bacteria1 There are many different types of bacteria that affects plants or parts of plants. Leaves can become spotted with a yellowish halo around the affected spot or softer parts like tubers and roots may discolour and rot often becoming slimy and smelly...
Caused by:- Several Bacterial species
Control:- Usually bacteria enter plants by damage areas and usually only affe...

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Common Name:- Bacteria Wetwood
P_slimeflux Bacterial Wetwood is a bacterial disease called Slime Flux which attacks many trees such as apple, ash, aspen, beech, birch, cottonwood, elm, fir, hickory, maple, mulberry, oak, plum, ...
Caused by:- Various Bacteria, Fungi and Yeast
Control:- It can be difficult to prevent the stem damage that leads to the de...

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Common Name:- Bacterial Canker
P_bacterialcanker1 Areas of bark may flatten and sink inwards. The damage areas may ooze resin. Affected branches may not open buds or if they do they wither and die soon after opening. leaves may not develop properly due to lack of nutrients and may yellow prematur...
Caused by:- The Fungi Pseudomonas prunorum or syringae
Control:- Prune out damaged areas and spray with copper based fungicide like ...

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Common Name:- Bacterial Soft Rot
P_bacterialrot The bacteria Streptomyces ipomoeae on sweet potatoes.
Bacterial Soft Rot is also called Soft Rot Tubers, root and fruit are usually affected although on some plants stems are ...
Caused by:- Various Bacteria
Control:- Prune out affected areas as early as possible. Sterilize equipment ...

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Common Name:- Balsam Wooly Adelgid
P_blsmwlyadel Balsam Woolly Adelgids is known as the Silver Fir Adelgid, Adelges piceae and is a is a tiny, non-flying, sap sucking insect that attacks mainly Abies species of trees.
They are...
Caused by:- The Adelgid Adelges piceae
Control:- Spraying with insecticides is effective, but costly and is difficul...

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Common Name:- Bark Beatles
P_barkbeetles There are several beetles that eat the tree below the bark. Some carry diseases from one plant to the next. One of the most famous is Scolytus scolytus The elm Bark beetle. Many beetles eat channels below the bark where the xylem and phloem cells ...
Caused by:- Various Beatles
Control:- The best control is by pruning out and burning affected branches an...

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Common Name:- Bay Sucker
P_baysucker The edges of the leaves of the bay tree becomes thickened and curled over. Later the yellowish leaf edges becomes a reddish brown. It is caused by Trioza insect sucking the sap from the tree leaves which curves to protect the insect.
Caused by:- The Insect Trioza alacris
Control:- I find that it does not cause worrying infestations and pick off th...

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Common Name:- Bean Anthracnose
P_beananthracnose Seedlings grown from infected seeds often have dark brown to black sunken lesions on the cotyledons and stems Severely infected cotyledons die early, and growth of the plants is stunted. Diseased areas may girdle the stem and kill young plants. ...
Caused by:- The Fungus Colletotrichum lindemuthianum
Control:- Use certified seeds and bury plant remains. Rotation of crops will ...

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Common Name:- Bean Blight
P_beanblight Known as Common Blight the characteristic leaf symptoms consist of irregular areas of brown dry tissues surrounded by a narrow lemon yellow border. These lesions frequently occur at the leaf margins. Pods have sunken circular spots, at first water...
Caused by:- Xanthomonas phaseoli
Control:- Use certified seeds as the infection can be carried by the seeds. P...

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Common Name:- Bean Choclate Spot
P_beanchoclatespot Brown spots appear on the leaves of broad beans. Streaks may also appear on the stems, pods and flowers. Severely affected plants may die or at least yields will be reduced. Damp and wet conditions help the spread.
See these other Grey Moul...
Caused by:- The Fungus Botrytis fabae
Control:- Allow free air circulation as much as possible and grow on well dra...

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Common Name:- Bean Halo Blight
P_beanhaloblight Small spots appear on the leaves of French or Runner Beans. The spots appear at first jelly filled turning darker. Each spot is surrounded by a yellow halo. Later the leaves become chlorotic then die. The stems and pods can also be affected. Initi...
Caused by:- The Bacteria Pseudomonas phaseolica
Control:- Pick off infected leaves as soon as they appear and burn them. Some...

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Common Name:- Bean Rust
P_beanrust Rust on Phaseolus Genus of beans which include beans Bush bean, French bean, Kidney bean, Pinto bean, Pole bean, Runner bean, Snap bean is caused by the fungus Uromyces appendiculatus. This fungus is unrelated to Broad Bean rust which is caused by...
Caused by:- The Fungus Uromyces appendiculatus
Control:- As with any fungal disease one of the best ways of preventing it is...

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Common Name:- Bean Seed Beetles
P_beanseedbtle Although there are several beetles that attack bean seeds Broad beans are usually attacked by the beetle Bruchus rufimanus which lays eggs inside the bean pods and enter the seeds then emerge before the seeds are planted ready to infect the next y...
Caused by:- The Beetle Bruchus rufimanus
Control:- Very little can be done apart from spraying with a systematic insec...

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Common Name:- Bean Seed Fly
P_beanseedfly The germinating seeds of French and Runner beans are eaten by white fly larvae which are living in the soil. The seedlings are usually killed, but those that survive are often ragged or have multiple shoots as the growing tips are damaged.
Caused by:- The Maggot of Delta platura
Control:- Treating the seeds with Lindane dust or similar insecticides. Sowin...

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Common Name:- Beech Bark Desease
P_beechbarkdis Areas of the bark die and appear slightly sunken. These areas often extrude a tar like substance. The tree loses vigour and the leaves turn yellow. Tiny red fungal growths appear on the damaged bark. This disease often accompanies Beech Bark Scal...
Caused by:- The Fungus Nectria coccinea
Control:- As this disease enters via wounds it is best to protect any damaged...

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Common Name:- Beech Bark Scale
P_beechbarkscale A powdery white waxy covering appears in the crevices of the bark of beech trees, under which small sap feeding scale insects live. The trees are rarely killed by this, but it allows the Beech Bark disease to enter the wound and this then eventual...
Caused by:- The Scale Insect Cryptocococcus fagisuga
Control:- Spray with a winter tar wash or inecticidal or horticultural oil. W...

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Common Name:- Beech Gall Midge
P_beechgallmidge In Summer yellowish-brown tubular growths are seen on the upper parts of the leaves of Beech. These contain the larvae of the fly which lay their eggs on the leaves in mid-summer. There are other flies that cause this effect.
See also these...
Caused by:- The Insect Hartigiola annulipes
Control:- Spraying with a systemic insecticide if possible. The flies rarely ...

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Common Name:- Beech Leaf Mining Weevil
P_beechleafmin,jpg?1280881815 The leaves of Beech are eaten leaving round holes. They lay their eggs in the center of the leaf and the larvae mines its way to the tip of the leaf leaving straight tracks of dead leaf, which often merge to kill part of the leaf.
See these...
Caused by:- The Beetle Rhynchaenus fagi(Orchestes fagi)
Control:- As this usually happens in the spring clipping the Beech and destro...

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Common Name:- Beech Wooly Aphid
P_beechwoolyaphid Small yellow insects with a white waxy covering infests the young shoots of Beech in spring and summer. They often look like whiteflies. They suck the sap of the tree and weaken it. Their sugary secretions causes other moulds to develop on the lea...
Caused by:- The Aphid Phyllaphis fagi
Control:- Spray with insecticide if possible preferable systematic.

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Common Name:- Beefstake Fungus
P_beefstakefungus This fungus only seems to grow on mature trees that are several decades old. In England it is mainly seen on Oaks and Sweet Chestnuts in autumn, but other trees in other countries are affected. The fungus looks and taste a bit like beef. It bleeds...
Caused by:- The Fungus Fistulina hepatica
Control:- Apart from removing the fruiting brackets to limit the spread there...

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Common Name:- Bees
P_bees1 There are many types of bees that can cause problems in the garden. By far the most noticeable one is the Leaf Cutter Bees usually cause damage to leaves, but is seldom enough to worry about unless showing plants for exhibition. Most bees can be i...
Caused by:- A Few species of Bees
Control:- Call a beekeeper out to remove bumblebees if you cannot leave them ...

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Common Name:- Beet Leaf Miner
P_beetleafminer This picture was obtained from Wiki Commons and shows the adult fly Pegomya hyoscyami. The beet leaf-miner Pegomya hyoscyami is the same larvae as one of the spinach leafminer. It is a small anthomyiid fly whose larvae attack the leaves of spinac...
Caused by:- The Larvae of Pegomya hyoscyami
Control:- If the infestation is not large it is possible to remove the affect...

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Common Name:- Begonia powdery mildew
P_begoniapomild Powdery mildews are one of the most widespread plant diseases. They affect virtually all kinds of plants from cereals and grasses, to fruit trees, and broad-leaved shade trees.
Powdery mildews are usually host specific, which means they do ...
Caused by:- The Fungus Microsphaera
Control:- This fungus is accelerated by dry roots and damp leaves with poor a...

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Common Name:- Big Bud Mites
P_bigbudmites There are several trees, shrubs and climbers that are affected by different species of mites. The buds usually develop over the winter and can usually be seen easier as usually the leaves are absent. A microscope is usually needed to see the mites...
Caused by:- Several Gall Mites
Control:- On some species of plants they can be tolerated, but sometimes spra...

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Common Name:- Birch Witches Broom
P_birchwitchbroom Branched twigs which looks like a broom or birds nest. The leaves turn yellow and are covered with fungal spores.
Caused by:- The Fungus Tapbrina betulina
Control:- The broom like growths are susceptible to a heavy frost, but are be...

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Common Name:- Black Bean Aphid
P_blackbeanaphid The aphids attack the new tips of several plants, but spring sown Broad beans are particularly affected. The sap feeding aphids weaken the plant and reduce yields.
Caused by:- The Aphid Aphis fabae
Control:- Spray with a propriety insecticide as soon as seen. Removal of seve...

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Common Name:- Black Root Rot
P_blkrtrot Black root rot (BRR) is a common and destructive fungal disease caused by the fungus Thielaviopsis basicola which attacks a variety of greenhouse bedding and pot crops. It begins by attacking the middle of the root and forms small, black cankers t...
Caused by:- The Fungus Thielaviopsis basicola
Control:- Good husbandry is probably the best defence for avoiding this disea...

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Common Name:- Black Spot
P_blacksopt3 Rose black spot is specific to roses and all types are susceptible. It is caused by the fungus Diplocarpon rosae which kills the cells on the leaves of roses leaving brown to black spots on leaves. The spots may join together or remain separate.
Caused by:- The Fungus Diplocarpon rosae
Control:- Rake up and destroy fallen leaves in the autumn. Prune out all stem...

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Common Name:- Blackberry Cane Spot
P_bberrycsnespot Whitish-grey round shaped spots surounded with a purple margin appear on the canes. Small black fungal fruiting bodies appear in the center of the spots. The canes then die back.
Caused by:- The Fungus Elsinoe veneta
Control:- Cut out infected canes and spray with a propriety fungicide.

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Common Name:- Blackcurrant Gall Midge
P_bcurrantgallmidge Leaves of the Blackcurrant does not develop and remain small due to the larvae of Dasineura tetensi feeding on the shoot tips. The leaves and or tips often dry up and die.
See also these other Galls
Caused by:- The Insect Dasineura tetensi
Control:- Spraying with a propriety insecticide before the buds open in spring.

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Common Name:- Blackfly
P_blackfly There are many different species of blackflies, some of which attack specific plants. They all suck the sap from the plant they infest and weaken it.
They appear black compared with the common aphid which is green, but the effects are the s...
Caused by:- Several species of Aphids
Control:- As an emergency quick solution I squish them between the fingers or...

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Common Name:- Bleeding Canker
P_bleedingcanker A light brown substance ouze from the bark of mature trees. Patches of the bark may die and crack, which will allow other bacteria to enter and further affect the tree. Branches may die if the fungus totally ring the bark. Picture by Joseph O'Brie...
Caused by:- Fungus of the Phytophthora species
Control:- Cut out damage areas and protect with a pruning paint. A winter tar...

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Common Name:- Bloossom End Rot
P_blosssomrot Patches of the fruit at the end where the blossom was attached appear brown and leathery. Some of the fruit will rot and some fruit on the same bunch will appear healthy.
Caused by:- Dry Acidic soil
Control:- Some plants like Citrus and Rhododendron needs acidic soil, but mos...

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Common Name:- Blossom Wilt
P_blossomwilt Blossom Wilt is a fungal disease, which also affects apples, pears, plums, cherries and related ornamentals. It kills blossoms, spurs and small branches. The problem is caused by two Sclerotinia species of fungi S. laxa (Monilinia cinerea) and S. ...
Caused by:- The Fungus Sclerotinia
Control:- Spraying operations can only be effective when they kill the spores...

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Common Name:- Bluebell Rust
P_bluebellrust Dark brown fungal pustules appear on the leaves. These may be round or elliptical. Flower or leaves are also attacked. The leaves yellow and die. It weakens the bulbs and limit flowering the following year.
See also these other rusts
Caused by:- The Fungus Uromyces muscari
Control:- As with any fungal disease one of the best ways of preventing it is...

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Common Name:- Bolting
P_bolting Several plants, like onions, Cauliflower and cabbages, may send up flower spikes before it has properly matured. It is caused by many growing conditions, such as dryness, coldness, inappropriate use of fertilizers, loose or solid soils and other g...
Caused by:- Growing conditions
Control:- Choose the right varieties for the conditions or make the condition...

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Common Name:- Boron Deficiency
P_borondiff The symptoms vary with the plants or tree affected. On root vegetables the growth is inhibited and cracking of the root which leads to rotting. On trees the leaves may be distorted and smaller than usual. Heavy rainfall areas are prone to this def...
Caused by:- Excess Soil Lime
Control:- Applying Borax in quantities depending on rainfall as Boron is rapi...

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Common Name:- Botrytis
P_rosebotysis Botrytis cinerea(Botryotinia fuckeliana) has a very wide host range and produces white to gray to brown fungal growth on infected areas. The affected area eventually turns black and can resemble blackspot on roses.
It is usually always pres...
Caused by:- The Fungus Botritis cineria
Control:- Controlling this fungus is often difficult as it is so widespread s...

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Common Name:- Box Succker
P_boxsucker The young shoots are stunted closely spaced and cupped. The shoots looks like miniature cabbages. A whitish liquid can be emptied from the cupped leaves in spring which is the excrement of the sap feeding insects. The sap feeding nymps are pale g...
Caused by:- The Insect Psylla buxi
Control:- Spraying in spring with an insecticide. Clipped box may not get aff...

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Common Name:- Bracket Fungus
P_bracketfungus1 Bracket fungi may appear on many different tree species. Some fungi species have a wide host range. Others are characteristic on certain trees e.g. Meripilus giganteus on beech, Daedaleopsis confragosa on deciduous trees like Alders, Birches, and ...
Caused by:- Several Fungus
Control:- Avoid damage to the bark, which acts like skin in animals. Healthy ...

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Common Name:- Brassica Dark Leaf Spot
P_brasicadklfspt Several round brown spots develop on leaves each having concentric rings of small fungal growth bodies. Eventually holes may develop or the leaf dies.
Caused by:- The Fungus Alternaria brassicola
Control:- Wet and poor circulation of air helps the spread of the fungus. Too...

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Common Name:- Brassica Downy Mildew
P_brassicadnymldw Downy mildews are a common plant disease. They affect virtually all kinds of plants.
Brassicas Downy mildew is a disease of seedlings and also mature plants. It is caused by a fungus Peronospora parasitica which penetrates the tissues under...
Caused by:- The Fungus Peronospor parisitica
Control:- The best method of control is prevention therefore good hygiene and...

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Common Name:- Brassica Light Leaf Spot
P_brassicalilfspot Brassica Light Leaf Spot is caused by the fungus Cylindrosporium concentricum(Pyrenopeziza brassicae) which is a serious pest of Oil Seed Rape. The symptoms appear from late autumn as light green areas on leaves surrounded by a halo of white/pink ...
Caused by:- The Fungus Cylindrosporium concentricum
Control:- Remove infected leaves ASAP and burn to avoid spreading the fungus....

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Common Name:- Brassica Ring Spot
P_brassicaringspot Brown concentric spots with yellow edges occur on the leaves. Later black fungal spore bearing bodies are visible on the spots.
Caused by:- The Fungus Mycosphaerella brassicola
Control:- Remove and burn infected leaves ASAP.

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Common Name:- Brassica Soft Rot
P_brassicasoftrot Soft Rot caused by Paul Bachi, University of Kentucky Research and Education Center, Bugwood.org. The rot usually starts with damage to the plant by slugs, snails and other boring insects. When seen it is usually too late to save the plant. Too we...
Caused by:- Several Bacteria
Control:- Dig up and burn infected plants to contain spread. Avoid damage to ...

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Common Name:- Brassica White Blister
P_brassicawteblstr Brassica White Blister is caused by the fungus Albugo candida which related to the downy mildews. Like Downy Mildew it feeds of the plant tissues and causes white pustules to appear on the leaves which distorts them. Brassica White Blister often o...
Caused by:- The Fungus Albugo candida
Control:- Practice good hygiene and pick off and destroy affected leaves and ...

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Common Name:- Brassica Wirestem
P_brassicawirestem The fungus mainly attacks cauliflowers and but other vegetable plants such as cabbage, lettuce and brussels sprouts are also affected. Damage caused by wirestem . Wirestem normally attacks seedlings and causes the stems to fail and the seedling t...
Caused by:- The Fungus Thanatephorus cucumeris
Control:- Good soil hygiene is essential for seedlings. Reduce the acidity...

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Common Name:- Broad Bean Rust
P_brdbeanrst Broad Bean rust which is caused by the fungus Uromyces viciae-fabae and infects Vicia beans which include Bell Bean or Tic Bean, Broad Bean, Fava Bean, Field Bean. This fungus is unrelated to rust on the Phaseolus Genus of beans which include bean...
Caused by:- The Fungus Uromyces viciae-fabae
Control:- As with any fungal disease one of the best ways of preventing it is...

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Common Name:- Broom Gall Mite
P_broomgallmite During Spring and summer the buds on Broom (Cytisus) do not open and develop into a mass of growth covered with silvery hairs. When they dry up they remain on the plant over winter. A microscopic Gall mite lives in the unopened buds. In severe cas...
Caused by:- The Insect Eriophyes genistae
Control:- Pruning out the infected buds is the main form of attacking the mit...

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Common Name:- Brown Rot
P_brownrot1 Brown areas appear on fruit then white postules appear in brown areas.
Caused by:- The Fungi Sclerotinia fructigena and S. laxa
Control:- remove affected fruit and spray with fungicide.

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Common Name:- Brown Scale
P_brownscale Brown scale insects up to 5mm long attach themselves to the stems and leaves of several plants and shrubs, especially in sheltered growing areas. The sap feeding insects excrete honeydew which makes the leaves sticky and allow other moulds and fun...
Caused by:- The Scale Insect Parthenolecanium corni
Control:- The shell or scale protects the older insects from insecticides, so...

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Common Name:- Brown Tail Moth
P_brntlmoth The Brown Tail Moth (Euproctis chrysorrhoea) is a beautiful white moth with a brown tail. The caterpillars are brown, has a dotted white line down each side of their bodies which are covered in hairs and two very distinctive red dots on the top re...
Caused by:- The Larvae of the Euproctis chrysorrhoea Moth
Control:- The best way to control this moth is to cut out the nests in the wi...

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Common Name:- Bub Drop
P_buddrop1 There are many causes why plants drop their buds. These can range from missing nutrients, improper humidity, light levels or temperature, lack of water or overwatering., plants being pot-bound, root deseases, using the wrong insecticide, using ins...
Caused by:- Various Stresses
Control:- Growing plants according to their requirements, which involves a st...

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C
Common Name:- Cabbage Moth
P_cabbagemoth1 The Cabbage Moth (Mamestra brassicae) is a common European moth, becoming less the further north you go. As the name suggests the larvae, which is green or brown with dark spots, mainly feeds on cabbage (Brassica spp.), but does attack other plant...
Caused by:- The Moth Mamestra brassicae
Control:- The best way to prevent worms is to stop the coddling moths from la...

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Common Name:- Cabbage Root Fly
P_cabbagerootfly1 The Cabbage Root fly Delia radicum, is also known as the cabbage fly, root fly or turnip fly, is a pest Brassica crops such as Brussels sprouts, Kale, Swedes and Turnips. The larvae are known as the cabbage maggot or root maggot. The adult flies a...
Caused by:- The Insect Delia radicum
Control:- Dust planting hole with an insecticide like Lindane or Primiphos-Me...

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Common Name:- Cabbage White Butterflies
P_cabbagewhitebut1 There are two types of Cabbage White Butterflies the large and the small. The Large Cabbage White Butterfly is less widely distributed in the world than the Small. The caterpillars will be found on Brassicas eg. cabbage, swede, kale, throughout th...
Caused by:- TheButterflies Pieris brassica & p. rupae
Control:- Vigilance in inspecting the Brassica on the underside of the leaves...

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Common Name:- Cabbage Whitefly
P_cabbwhitefly The whitefly lays their eggs on the underside of Brassica leaves in their hundreds. Often they are not noticed until the flies are hatched and are disturbed by the brushing past of the plants. The Brassicas are covered on the underside of their le...
Caused by:- The insect Aleyrodes proletella
Control:- The adults are active throughout the year and do attack other plant...

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Common Name:- Calcium Deficiency
P_calciumdef Although this is not a pest as such it often causes problems related to certain pests. The effects on a plant is different according to the plant and cause. On Brassicas the browning of internal leaves, stunting and browning of central leaves of C...
Caused by:- Various Causes
Control:- Liming the soil to raise the ph of the soil especially where Brassi...

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Common Name:- Camellia Gall
P_camelliagall Camellia gall is caused by the fungus Exobasidium camelliae. The galls are formed at the shoot tips where the leaves should be in early summer. This disease only attacks camellias especially in wet weather. A similar disease of azaleas and rhodod...
Caused by:- The Fungus Exobasidium camelliae
Control:- The gall is more prevalent in wet conditions and the spores are dis...

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Common Name:- Camellia Yellow Mottle
P_cameliayelmot The mottling of the leaves of Camellia with yellow to white markings. It may also cause discoloured areas within the petals (flower breaking).
Caused by:- A Virus
Control:- Camellia yellow mottle virus is a virus of camellias. It does not a...

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Common Name:- Canker
P_nectriacanker2 Cankers are dead sections of bark on branches or main trunks of trees. Bark may be killed by mechanical damage or by plant pathogens, especially fungi and bacteria. Most plant pathogens are unable to penetrate bark directly but will quickly coloni...
Caused by:- Various fungii
Control:- Prune out the affected branch as early as possible. Treat with fung...

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Common Name:- Capsid Bugs
P_capsidbug The shoots of several plants are mishapened with many small holes. Several plants shoots open unevenly or abort at an early stage in its development. Lygocoris is pale green and are about 5mm long as an adult and suck the sap from the shoots and ...
Caused by:- The Insect Lygocoris pabulinus
Control:- The only solution is to spray with an insecticide, preferable with ...

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Common Name:- Carnation Tortrix Moth
P_carntortmoth The Carnation Tortrix Moth, Cacoecimorpha pronubana feeds on several other plants, but it can be a serious insect of carnation both indoor and outdoor. Its distribution is now worldwide.
The adult moth is usually seen during the evening fli...
Caused by:- The Moth Cacoecimorpha pronubana
Control:- The caterpillar usually has at least two generations per year, betw...

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Common Name:- Carrot Cavity Spot
P_carrotcavspot Round to elliptical to irregularly shaped discolouration develop on the roots which can crack and develop secondary infections of various bacteria which eventually destroys the plant and roots.
Caused by:- Unknown Causes
Control:- Although fungus is suspected this is not proven and some people sus...

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Common Name:- Carrot Motley Dwarf Virus
P_carotmotdwfvir Carrots and Parsley plants infected at the seed stage will be stunted, and yellow to red in color. Plants appear as if they are suffering a nutritional deficiency. When plants are infected at later stages of growth, plants may or may not have stun...
Caused by:- Virus
Control:- Carrot motley dwarf virus symptoms are caused by the infection of c...

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Common Name:- Carrot Red leaf Virus
P_carotredleafvir In carrot the virus causes reddening and yellowing of leaves and some stunting of the plants. It usually occurs in association with carrot mottle virus to cause the disease known as motley dwarf, in which the reddening, yellowing and stunting is ...
Caused by:- Virus
Control:- The virus can have several hosts and is spread by aphids. Some cult...

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Common Name:- Carrot Root Fly
P_carrotrootfly The roots of the carrots and related species are bored by a slim creamy-yellow maggots up to about 1cm long.As the tunneled parts die this leaves a brown stain usually on the surface of the root crop. This attack can lead to secondary attack by fu...
Caused by:- The Insect Psila rosae
Control:- The larvae of the carrot fly has two or three generations per year ...

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Common Name:- Caterpillars
P_caterpillars Caterpillars are the larval stage if insects mainly Moths and Butterflies, but there are several flies and beetles which have larval stages which attack plants in many ways. Mainly by eating the leaves, fruits, roots and seeds.
Caused by:- Various insects
Control:- most caterpillars can be eradicated by using biological means like ...

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Common Name:- Cats
P_cats Cats of the domestic type (Felis catus)can reek havoc in a garden or vegetable bed. Their urine can scorch the leaves and bark of plants, Mature trees and shrubs can be killed by cats using the trunk as a scratching post, many cats poo on the lawn...
Caused by:- The Animals Felis catus
Control:- There are many remedies which help to prevent cats being a nuisance...

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Common Name:- Cavity Rot
P_cavityrot Once the bark of trees are damaged various fungi can attack the exposed wood leading to rot and decay which can lead to a cavity forming. This will weaken the trunk and branches which can then become dangerous to passers-by.
Caused by:- Various Fungii
Control:- Trees usually form callouses over damaged wood as well as producing...

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Common Name:- Cedar Aphid
P_cedar aphid Cedar aphid (Cedrobium lapportei), which originates from Morocco, is a small aphid about 1.5-2mm long and greyish-brown with a paler stripe starting from the head end. They suck the sap from the tree and weaken it. It infests cedars at the bases ...
Caused by:- The Aphid Cedrobium lapportei
Control:- If the tree is small it can be sprayed with an insecticide. Hosing ...

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Common Name:- Cedar Leaf Blight
P_cdrlfblight Didymascella thujina is an ascomycete fungi from the family of Hemiphacidiaceae, which causes Cedar leaf blight (or Keithia Thujina needle blight disease, after the original genus name) in several cedar(Thuja) species. The disease is indigenous to...
Caused by:- The Fungus Didymascella thujina(Keithia thujina)
Control:- Control of the disease can be effective with certain fungicides and...

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Common Name:- Cedar Leaf Miners
P_cedarlfminer Cedar leaf miners are insects, whose larvae eat the inside of the leaves of cedar trees beginning at the tips of the outer most branches. This causes the leaves to wither and turn a translucent brown. The trees usually survive, but they can die if...
Caused by:- Several Genera of leaf miner insects
Control:- Except in heavy infestations, this problem can be controlled by pru...

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Common Name:- Cedar Quince Rust
P_qncerust Gymnosporangium clavipes with aecia spore producing bodies on a Hawthorn(Crataegus) branch.
Cedar Quince Rust is caused by the fungus Gymnosporangium clavipes and like most rust diseases needs two hosts to complete its life cycle. This rust...
Caused by:- The Fungus Gymnosporangium clavipes
Control:- Monitoring rust canker on red cedar trees and temperatures during w...

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Common Name:- Celerey Leaf Miner
P_celerylfminer The leaves of Celery and related plants are eaten from between the epidermis by the larvae of a fruit fly. This leave the leaves looking as they are scorched. The maggots are up to about 6mm long and live inside the leaves until they pupate into a...
Caused by:- The Insect Euleia beraclei
Control:- They are more than generation per year of Euleia beraclei and plant...

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Common Name:- Celery Leaf Spot
P_celeryleafspot This fungus causes circular to irregular in shape spots on Celery or Celeriac leaves. These range in sizes from 3 to 10 mm in diameter. Dark coloured fruiting bodies of the fungus which form in the center of leaf spots give the spots a grainy appe...
Caused by:- The Fungus Septoria apitcola
Control:- This fungus can be spread by the spores overwintering on the seeds ...

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Common Name:- Centipedes
P_centipedes There are many hundreds of Centipedes which are arthropods belonging to the class Chilopoda. Adult centipedes are yellowish to dark brown, often with dark markings, and 1/8 to 6-inches long. The body is flattened with 15 to 177 body segments, wh...
Caused by:- Several arthropods of the Class Chilopoda
Control:- Centipedes seldom need to be controlled unless they become a nuisan...

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Common Name:- Chafer Grubs
P_chafergrubs There are several beetles the larvae of which are known as Chafer Grubs The Grubs are found in the soil and are usually curled up in the shape of a letter C and having three pairs of legs near the head which is usually shiny. They chew through the...
Caused by:- Larvae of various beetles
Control:- The adult beetles emerge from the soil around May. Using a biologic...

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Common Name:- Cherry and Pear Slugworm
P_pandcslugworm The Pear and Cherry Slugworm (Caliroa cerasi) attacks Hawthorne, mountain Ash, Plums, Sorbus and Quince. It is actually a bottle green insect larvae, of a sawfly, which covers its body in a black slimy mucilage which makes it look like a slimy sl...
Caused by:- The Sawfly larvae of Caliroa cerasi
Control:- Spray with a contact insecticidal spray such as soon as they are no...

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Common Name:- Cherry Blackfly
P_cherryblackfly During late spring and early summer, the undersides of the leaves and the shoot tips are covered with shiny black aphids which suck the sap from the tree and leaves. The leaves then becomes curled up and misshapen. By the time the leaves are curle...
Caused by:- The Aphid Myzus cerasi
Control:- These aphids hatch from eggs laid on the tree in the late Autumn an...

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Common Name:- China Mark Moth
P_chinamarkmoth The caterpillars can affect the leaves of Pond Lilies in several ways, the most obvious is that rounded pieces are cut from the leaf pads. At the early stage they stitch this cut part of the leaves together and live between the leaf which they dev...
Caused by:- The Caterpilla of Elophila nymphaeata
Control:- Picking off individuals is possible, as spraying in a pond is not u...

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Common Name:- Chironomid Midges
P_chironomidmidges Chironomid midges are small mosquito-like flies, varying in length from 2 to 18 millimeters depending on the species. Colour and markings also vary with species from pale green to almost black. One distinguishing characteristic common to all speci...
Caused by:- The Maggots of Criotopus species
Control:- Some can be washed off the leaves for fishes to eat. Often the atta...

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Common Name:- Chlorosis
P_chlorosis Chlorosis is the yellowing of the leaves of plants. There are many causes that can cause this effect. One that is the main cause especially in acid soil loving plants is the lack of nutrients like Iron, Manganese, Magnesium and Nitrogen caused by...
Caused by:- Many Causes
Control:- The precise cause must be found before treatment can be initiated, ...

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Common Name:- Chrysanthemum Eelworm
P_chrysanteelworm This eelworm damages the roots of plants like Chrysanthemums, Penstemons, Gypsophila, Phlox and Anemones and are not usually visible. The Damage is not usually noticed until the plant suddenly keels over and dies from the bottom upwards.
Se...
Caused by:- The Nematode Aphelenchoides ritzemabosi
Control:- Control is limited by the availability of chemical treatment, but c...

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Common Name:- Chrysanthemum Leaf Miner
P_chrysantlfminer Chrysanthemums, Gerbias Marguaretes and other related plants leaves are affectedby this maggot. Two to four days after the eggs are laid they hatch and larvae feed between the upper and lower surface of the leaves, making winding, grayish tunnels ...
Caused by:- The Magots of Phytomyza sygenesiae
Control:- With light infestation the maggots can be crushed between the finge...

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Common Name:- Chrysanthemum Petal Blight
P_chrysantpetblight Small water- filled spots or smaller brown spots appear on the petals, eventually spreading to destroy the bloom rapidly. Other Compositae are also affected by this fungus and in edible Burdock it is believed to cause causes Black Streak disease.
Caused by:- The Fungus Itersonilia perplexans
Control:- Most fungus rely on wet humid conditions so aeration between plants...

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Common Name:- Chrysanthemum Ray Blight.
P_chrysantrayblight All parts of the plant ccan be affected, but flower infections start as small reddish?brown or brown spots, often occurring on one side of the flower. Infection spreads rapidly and the whole flower will eventually rot with the affected florets st...
Caused by:- The Fungus Didymella chrysanthemi
Control:- High humidity is sure to encourage this fungus so air circulation i...

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Common Name:- Chrysanthemum White Rust
P_chrysantwhiteblight Chrysanthemum white rust is a serious disease of chrysanthemum which spreads very quickly covering the plants with pustules. It is a quarantine disease in some countries. It produces small white to yellow spots up to 4 mm wide on the upper surfa...
Caused by:- The Fungus Puccinia horiana
Control:- The fungus is encouraged by high humidity with a lack of air circul...

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Common Name:- Clematis Wilt
P_clematiswilt Plants with clematis wilt disease will often suddenly collapse overnight - the foliage turns black (not brown) and the veins take on a purple colour. Clematis can wilt for many reasons such as slugs and snails and even earwigs or caterpillars will...
Caused by:- The Fungus Ascochyta clematidina
Control:- Affected stems should be cut down to ground level and the remaining...

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Common Name:- Clubroot
P_clubroot Club Root is a pernicious disease that can survive in the soil for up to 20 years. It is more prevalent in wet acid soils. The Cruciferae Family which includes all the brassica can be affected by this slime mould. The roots become distorted and sw...
Caused by:- The Mould Plasmodiophora brassicae
Control:- The first line of defence is to burn the infected plants, increase ...

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Common Name:- Codling Moth
P_codlingmoth This moth larva is the famous "worm in the apple" the females of which lay their eggs on the fruit or leaves of fruit trees like apple or pears. Once hatched the larvae eats its way into the fruit to the protein rich seeds and then tunnels its way...
Caused by:- The Larvae of Cydia pomonella
Control:- This pest is difficult to eradicate and a combination of attacks wi...

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Common Name:- Colletotrichum
P_colletotrichum There are many Colletotrichum fungus which are important pathogens to many plants such as cereals, grasses, legumes, vegetables, fruits and ornamental plants around the world. The leaf and stems starts with spots which develop into sunken lesions ...
Caused by:- The Fungus Colletotrichum
Control:- Seeds can transmit this fungus, but prompt removal of affected part...

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Common Name:- Colorado Beetle
P_coloradobeetle The Colorado beetle is an important pest of potato crops and other plants. It is not native to the UK and is a notifiable pest It is approximately 10 mm long, with a bright yellow/orange body and 5 black stripes along the length of each of its w...
Caused by:- The Beetle Leptinotarsa decemlineata
Control:- The Colorado potato beetle has developed resistance to all major cl...

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Common Name:- Copper Deficiency
P_copperdeficiency Copper is an essential nutrient required for the normal growth and development of plants. This explains why about 60 to 70 percent of the copper is found in the chlorophyll. Copper deficiency can result in different symptoms in different plants. T...
Caused by:- Lack of nutrients and or Ph levels
Control:- Foliar feeding and applying a micro nutrient fertiliser will help, ...

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Common Name:- Coral Spot
P_coralspot Coral spot is a fungal disease of woody plants which causes branches to die back. It is usually found on dead wood, this fungal disease will migrate to living tissue after entering via pruning, bark and frost damaged twigs or branches. This rare ...
Caused by:- The Fungus Nectria cinnabarina
Control:- Treatment is difficult so to prevent infection by removal of dead b...

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Common Name:- Crown Gall
P_crowngall Crown gall is a disease of roots and stems and occurs on a large number of plants from cherries to roses. The name is derived from the rough galls that develop at the crown of the plant i.e. the point at the soil line where the main roots join the...
Caused by:- The Bacterium Agrobacterium tumefaciens
Control:- There are over 600 species of plants which are susceptible to crown...

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Common Name:- Crown Rot
P_crownrot There are many types of crown rot some specific to certain plants. The effects of crown rot is that the base of herbaceous plants or trees where the trunk joins the soil will start to rot. The Causal agent is a fungus. Some plants are affected by ...
Caused by:- Usually Phytophthora species
Control:- The most important factor in reducing the threat is to avoid contin...

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Common Name:- Cuckoo Spit
P_couckoospit Cuckoo-spit is the white, frothy substance found on certain plants during the spring and early summer. It is produced by the froghopper nymphs which sucks the sap from the host plants and excrete the excess. The froghopper is an insect and as suc...
Caused by:- The nymph of Philaenus spumarius
Control:- Cuckoo spit is a temporary inconvenience. Once autumn arrives frogh...

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Common Name:- Cucumber Gummosis
P_cucumbergummosis This disease is sometimes called Cucumber Scab. Discrete sunken grey to black spots usually with a mass of dense furry fungal growth appear on the fruit which may split. The stems and leaves may also be affected. At first, a sticky substance is ex...
Caused by:- The Fungus Cladosporium cucumerinum
Control:- Spraying with a suitable fungicide is possible combined with a 2- t...

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Common Name:- Cucumber Mosaic Virus
P_cucumbermosvirus Cucumber mosaic virus (CMV) is one of the most common plant viruses and can infect about 700 plant species and about 90 plant families. The symptoms vary according to the host plant, but can include leaf mosaic or mottling, especially yellow mottl...
Caused by:- A virus.
Control:- There is no known cure for this disease so infected plants should b...

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Common Name:- Currant and Goosebery leaf spot
P_currgsbryleafspot In early summer very small dark brown to black spots develop on the leaves of black currants, red currants and gooseberries. Badly infected leaves turn yellow and drop. The main damage is the defoliation which may occur as early as the end of July...
Caused by:- The Fungus Drepanopeziza ribis
Control:- The fungus lives over winter mainly in fallen leaves. Remove and de...

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Common Name:- Currant Blister Aphid
P_currantblisteraphid Currants especially red currant develops red raised areas that look like welts on its leaves. Currant blister aphids are pale yellow and live on the underside of the leaves in late spring-early summer where they feed by sucking sap. They also secr...
Caused by:- The Aphid Cryptomyzus ribis
Control:- In spring, spray plants with the systemic insecticide kill the emer...

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Common Name:- Currant Clearwing Moth
P_currantclrwngmoth The currant clearwing moth is very similar to the other species of clearwing moth and is found throughout Britain and other parts of the world. It is a very small, day-flying moth that is difficult to see because it is not moth-like in appearance,...
Caused by:- The Larvae of Synanthedon tipuliformis
Control:- Keeping a vigilant eye out for the bore holes in winter to spring a...

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Common Name:- Currant Reversion Virus
P_currantrevvirus Black Currant Reversion builds up slowly which gradually leads to reduced fruit cropping. It is a virus which is spread by the mites (Cecidophyopsis ribis) which causes big bud in ribes species. The mites look like a minute, white grub and are mic...
Caused by:- A Virus
Control:- Once your blackcurrant bushes are infected, its best to dig them up...

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Common Name:- Cutworm
P_cutworm1 Cutworms are larvae of heavy-bodied, night-flying moths. Noctuid moths, in particular those of the turnip moth Agrotis segetum. The older caterpillars feed underground, damaging plant roots and stems, sometimes so badly that the plant topples, hen...
Caused by:- The larvae of Noctuid moths
Control:- Birds eat cutworm larvae. The pesticide diazinon can eradicate a cu...

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Common Name:- Cyclamen Mite
P_cyclmnmite There are several mites that attack cyclamen which all give similar symptoms. Cyclamen mite Phytonemus pallidus(Steneotarsonemus) also known as Strawberry Mite is less than 0.5mm in le...
Caused by:- The Tarsonemid Mite Phytonemus pallidus
Control:- A broad spectrum insecticide may cause more damage than a specific ...

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Common Name:- Cypress Aphids
P_cypressaphids This aphid pest is causes widespread dieback of several popular hedging Cupressus species including Monterey & Italian Cypresses, x Cupressocyparis leylandii (Leyland Cypress), Chamaecyparis lawsoniana, Lawson Cypress, and occasionally Thuja occid...
Caused by:- The Aphid Cinara cupressi
Control:- Spray in early spring even if there is no visible sign of damage, i...

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Common Name:- Cytospora Canker
P_cytosporacnkr Cytospora canker is a fungus disease caused by the fungus Leucostoma persoonii. It affects many different types of trees like aspen, poplar, elm, willow, ash, mountain ash, oak, apple, spruce and stone fruits (e.g., cherry, plum, and peach) and ca...
Caused by:- The Fungus Leucostoma persoonii
Control:- The best control method is to keep the tree in a healthy and vigoro...

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