Pests and Diseases From Walnut Blight To Zucchini Yellow Mosiac Virus


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W
Common Name:- Walnut Blight
P_wlntblgth Walnut Blight is a bacterial blight caused by the bacteria Xanthomonas campestris pv. juglandis (Pseudomonas juglandis). It causes small brown angular to circular spots with yellow halos on leaflets which merge into large dry withered areas. It c...
Caused by:- The Bacteria Xanthomonas campestris pv. juglandis
Control:- Infected parts should be cut out to well below any visible damage...

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Common Name:- Walnut Blister Mite
P_wlntblstrmte The Walnut Blister Mite Eriophyes erinea is an eriophyid mite that feeds on the lower surface of leaves, causing a blister-like swellings on the upper surface of leaves.
On the underside of the leaf, beneath the blister, is a yellow...
Caused by:- The Mite Eriophyes erinea
Control:- Spraying with a systemic insecticide in late spring will kill the m...

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Common Name:- Walnut Leaf Blotch
P_wlntbltch Walnut Leaf Blotch is also known as Walnut Anthracnose and is caused by the fungus Marssonina juglandis, which fluctuates in severity from year to year, being most damaging in wet summers. It was formally known as Gnomonia leptostyla, or 'M...
Caused by:- The Fungus Marssonina juglandis
Control:- Fallen leaves from infected plants should be cleared and burnt or d...

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Common Name:- Wasps
P_wasps There are over 100,000 species of wasps most of which are parasitic to other insect pest species. Almost every pest insect species has at least one wasp species that preys upon it. This makes wasps extremely important in natural or biological cont...
Caused by:- Wasps from the Vespidae Family
Control:- Unless they are causing problems and their flight path is where peo...

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Common Name:- Water Lily Aphid
P_wtrlyaphid The Water Lily Aphid Rhopalosiphum nymphaeae is a brownish, pear shaped aphid about 2mm which lives in colonies on the upper surface of the lily leaves where they sucks the sap from the plant.
The aphids overwinter as eggs on Prunus species...
Caused by:- Thi Aphid Rhopalosiphum nymphaeae
Control:- Although many insecticides will kill these aphids, eradicating thes...

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Common Name:- Water Lily Beetle
P_wtrlybtle The Water Lily Beetle Galerucella nymphaeae and its larvae eat circular or elongated slots in the leaves of the lily. The adult beetles can cause significant damage to the flowers as well. This damage weakens the lily and secondary fungi often ent...
Caused by:- The Beetle Galerucella nymphaeae
Control:- Spraying with insecticides is difficult as these causes damage to f...

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Common Name:- Water Lily Leaf Spot
P_wtrlylfspot Water Lily Leaf Spot is caused by the fungus Ramularia nymphaearum, which causes reddish spots, sometimes with a distinctive yellow band around the edge, to appear above and below the leaves and on the stems. As it progresses small black fungal bo...
Caused by:- The Fungus Ramularia nymphaearum
Control:- Removing damaged foliage and burn and destroy.<br /> In ponds with...

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Common Name:- Waterlogging
P_waterlog Waterlogging is not a pest as such, but a physiological condition where the soil is saturated by water. It is one condition what kills more plants than any other conditions, both in house plants and in the garden. Most plants will withstand many d...
Caused by:- Too much water in soil
Control:- Improved soil by adding humus and corse sand to promote drainage an...

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Common Name:- Weedkillers
P_wdkiller Many gardeners seems to think that applying weedkillers is gardening. Looking at the shelvs at gardening centers and you will see rows and rows of weedkillers and only one with pest and disease chemicals. Rarely is there a need for weedkillers and...
Caused by:- Various Misuse of Weedkillers
Control:- Read the label and or instructions before using any weedkiller.<b...

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Common Name:- Weevils
P_vineweevil1 A weevil is a beetle belonging the Curculionoidea superfamily. They are usually small, less than 8 millimetres, and both larvae and adult usually eat a range of plants. There are over 60,000 species in several families, but most true weevils are i...
Caused by:- Beetles of the Curculionoidea superfamily
Control:- Spraying with insecticides and turning over the soil to expose the ...

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Common Name:- Western Flower Thrip
P_wfthrips The Western Flower Thrips (WFT), Frankliniella occidentalis can be a serious insect pest on over 500 different species of plants.
They are native to North America, but as they can hide in plant materials they have now spread worldwide.
Caused by:- The Thrip Frankliniella occidentalis
Control:- The thrips' natural enemies include insects of genus Orius and Ne...

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Common Name:- White Blister
P_whiblster White Blister caused by the fungus Albugo candida affects most plants of the Brassicaceae or Cruciferae family. Other species of Albugo affects other families like Compositae and Aizoaceae or Ficoidaceae.
This fungus is also related to the ...
Caused by:- The Fungus Albugo candida
Control:- Remove affected plant parts, and burn or dispose of severely infect...

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Common Name:- White Rust
P_whiterust White rust is a chronic foliar disease problem for several plants especially of the brassica. spinach and other plants. It is caused by the fungus Albugo candiada and there are several species in this Genus that tends to attack specific pl...
Caused by:- Fungus species of the Genus Albugo
Control:- To control Spinach White Rust fungicides need to be applied several...

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Common Name:- Whiteflies
P_cabbwhitefly There are over 1400 species of whitefly worldwide that attack a wide range of plants. Some species need warmth to proliferate and others, like the Cabbage whitefly, can live outdoors. The eggs are laid on the undersides of leaves and are cone-shap...
Caused by:- Small Sap Succking White Flies
Control:- Whitefly control can be difficult and complex as whiteflies readily...

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Common Name:- Willow Anthracnose
P_wllwanthnse Willow Anthracnose is caused by the fungus Marssonina salicicola, which has many synonyms such as:-
Xyloma sphaerioides Pers., Syn. meth. fung. (Göttingen) 1: 106 (1801)
Excipula sphaerioides (Pers.) Fr. [as 'sphaeroides'], Syst. myc...
Caused by:- The Fungus Marssonina salicicola
Control:- Raking up and destroying fallen diseased leaves, twigs and pruned o...

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Common Name:- Willow Bark Aphid
P_wlwbkaphid The willow Bark Aphid Tuberolachnus salignus is a very large aphid with black spots on its abdomen and three thorn-like projection on the back end of the abdomen. They are also called the Giant Bark Aphid and the Large or Giant Willow Aphid.
...
Caused by:- The Aphid Tuberolachnus salignus
Control:- Spraying with insecticides before the aphids become heavily establi...

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Common Name:- Willow Bean Gall Sawfly
P_wllowbngallsfly Several species of sawflies of the Pontania genera causes bean galls in willow leaves. Adults sawflies emerge in late spring and females lay eggs into the leaf tissue. This stimulates the formation of hard yellowish-green to red kidney shaped gall...
Caused by:- Several species of Pontania Sawflies
Control:- In general these galls do not do serious damage to the Willow and c...

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Common Name:- Willow Black Canker
P_willowblkcanker Willow Black Canker symptoms appear, after Willow Scab, in late spring to summer when red brown spots appear on the leaves which die and remain on the tree. Attack kills the young leaves and causes die-back and eventually cankers of the young sho...
Caused by:- The Fungus Glomerella(Phyalospora) miyabeana
Control:- Black Canker is spread by rain and wind activity, which disperses t...

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Common Name:- Willow Blight
P_willowblight Willow Blight is actually caused by two diseases, Willow Scab and Black Canker. They are caused by the fungi Glomerella miyabeana(Phyalospora miyabeana and Venturia saliciperda(Fusicladium saliciperdum) that share similar symptoms. Plants that are...
Caused by:- The Fungi Glomerella miyabeana & Venturia saliciperda
Control:- Pruning out diseased shoots and rake up fallen leaves and burn alon...

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Common Name:- Willow Flea Weevil
P_wllowfleaweevil Willow, bayleaf, cherries, plums, and poplar leaves may be severely damaged by these small insects from mid-summer on. Eventually the leaves blister, turn brown and drop off early in the autumn. Adults are tiny, elliptical, black weevils, about 3m...
Caused by:- The Weevil Isochnus(Rhynchaenus) rufipes
Control:- Spraying with a knock down insecticide in spring when the adults ar...

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Common Name:- Willow Leaf Beetles
P_wllowlfbeetle There are many beetles and their larvae that devour Willow (salix). The specific species is dependant on which species of Salix is grown and where in the world, but all the beetles and their larvae will attack Willow and other trees like Poplars. ...
Caused by:- Various Beetles
Control:- Spraying in spring and early summer might be the only option, but t...

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Common Name:- Willow Scab
P_willowscab Willow scab attacks and kills young leaves and causes die-back and eventually cankers of the young shoots . Olive-brown spores can be seen all along the veins on the undersides of leaves. It is caused by the fungus Venturia saliciperda(Fusicladium...
Caused by:- TheFungus Venturia(Fusicladium) saliciperda
Control:- Pruning out diseased shoots and rake up fallen leaves and burn alon...

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Common Name:- Willow Watermark Disease
P_wllowwtrmkdis This disease is caused by the Bacterium Brenneria salicis(formerly Erwinia salicis) and damages willow trees throughout the world. The disease is spreads rapidly in the wood vessels, which transport the water from the roots. In multiplying the bac...
Caused by:- The Bacteria Brenneria salicis
Control:- Very little can be done for infected trees apart from removal and b...

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Common Name:- Wilting
P_wilting There are many reasons why plants wilts or sags due to low turgor pressure in the plants cells. One of the most usual cause of wilting is overwatering. This causes the roots to get blocked by lack of oxygen or fungi and their roots begin to strugg...
Caused by:- Various causes
Control:- Depending on the cause the appropriate action can save a plant if i...

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Common Name:- Wind Damage
P_winddamage This Wild Rose which reaches a height of about twelve feet at the end of the garden was blown over and snapped in strong winds. Wind damage can come in many guises and are often attributed to other causes. On the worst side wind uproots trees and ...
Caused by:- The wind
Control:- Some trees and plants can be used as a wind break for more sensitiv...

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Common Name:- Winter Aconite Smut
P_winteraconitesmut On the deeply cleft palmate leaves and stems of Winter Aconite raised grey blisters develop. These sori like mass of spores later darken and erupt shedding black spores in the wind. This fungus needs actively growing leaves and stems to reproduce ...
Caused by:- Urocystis eranthidis
Control:- Spray unaffected plants with a systemic fungicide and remove infect...

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Common Name:- Winter Moth
P_wintermoth The Winter Moth is an unusual moth in that it is probably the only moth that is active in the winter in temperate climes. Their caterpillars eat holes in leaves, blossom and fruitlets which are often misshapen if they continue to develop. Apart fo...
Caused by:- The Moth Operophtera brumata
Control:- This pest can be reduced by placing a sticky grease band or sticky ...

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Common Name:- Wireworm
P_wireworm1 Wireworms are the soil dwelling grubs of the Click Beatles. There are about 60 types of Click Beatles in the UK, but only three are usually a pest on plant tubers like Dahlias and the roots of many plants like Chrysanthemums. The three types are ...
Caused by:- Larva of Click Beatles
Control:- There are no known safe chemical control of this pest. Crush any w...

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Common Name:- Wisteria Scale
P_wisteriascale1 Large scales appear when there are no leaves in the winter. When these are cracked open many white fluffy eggs fall out. Wisteria scale is a relatively new pest in Britain, which was first found in a London garden in 2001. Since then it has spread...
Caused by:- A species of Scale insect
Control:- Organic pesticides, such as those based on soft soaps or plant oils...

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Common Name:- Witches Broom
P_witchesbroom Witches broom is an abnormal growth of a many-branched structure and is commonly found on a large number number of species of trees, shrubs and soft plants such as cocoa, maple, Hornbeam, willow, conifers such as pine and spruce, honeysuckle, pota...
Caused by:- Various Fungi, bacteria and aphids
Control:- Human activity is often the cause of the introduction of these orga...

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Common Name:- Woodlice
P_woodlice Woodlice are crustaceans related to slaters, shrimps, lobsters and crabs, and belong to the arthropods order of Isopoda. They are the only crustaceans that have properly invaded land, without the need to return to water in order to breed, but they...
Caused by:- Several Genus and species of Crustaceans
Control:- The woodlice is preyed upon by a number of animals around the world...

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Common Name:- Wooly Aphids
P_woolyaphid1 Wooly Aphids are sucking insects that live on plant sap, and whose larvae produces a filamentous waxy white covering which resembles cotton wool and at first sight this may make them appear to be a fungus.
They have a wide range of host inc...
Caused by:- Various Insects and their larvae
Control:- The best way to tackle this pest is to blast off the fluffy, sticky...

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Common Name:- Wooly Vine Scale Insect
P_woolyvnescle This scale insect is common throughout the UK, Europe and America feeds on a wide range of woody plants. It occasionally attacks grapevine, peach and currants and survives by sucking the sap from the host tree or vine. The plant is weakened and so...
Caused by:- The Scale insect Pulvinaria vitis
Control:- A winter tar or oil wash when the plant is dormant will help to eli...

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Common Name:- Worms
P_earthworms Worms consists of many different distantly related animals which have a long wriggling cylindrical body and no legs. They are invertebrates and include Earthworms, Nematodes, Flatworms, insect larvae such as grubs, and maggots and some marine anim...
Caused by:- Several Genus and species
Control:- Always use compost on soils instead of chemicals where this is poss...

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X
Common Name:- X-Disease
P_xdisease X-DISEASE is caused by the bacterium Xylella fastidiosa that tends to live in the xylem of plants where it produces a gel which prevents nutrients transport. The symptoms vary according to the plant host. Strains of this bacterium are the causal a...
Caused by:- The Bacterium Xylella fastidiosa
Control:- If caught early enough the infected branch could be pruned below th...

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Y
Common Name:- Yellow Tail Moth
P_yllowtailmoth This is a pretty moth with a feathery look that attracts your attention in the gardens through Europe. It is also called Goldtail or Swan Moth The larvae or caterpillar feed on the leaves of many trees and sometimes perennials and are not usually ...
Caused by:- The Moth Euproctis similis
Control:- The moth can be picked off using gloves or sprayed with a propriety...

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Common Name:- Yellows Disease
P_yellows Yellows is a plant diseases that causes yellowing of the leaves and stunted growth. In diseased plants many membrane-bound structures resembling mycoplasma-like organisms are found within the phloem sieve elements through which nutrients and sugar...
Caused by:- Mycoplasma-like Organisms
Control:- There are no known cure and diseased plants are best removed and bu...

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Common Name:- Yucca Leaf Spot
P_yuccaleafspot1 Yucca suffers from a few fungi that causes leaf spot. They include Cylindrosporium angustifolium, Coniothyrium Concentricum and Cercospora concentrica. Cylindrosporium angustifolium spots are about 12 to 20mm oval, yellowish brown with a darker b...
Caused by:- Various Fungi
Control:- The disease is spread by splashes from other leaves and spores from...

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Z
Common Name:- Zucchini Yellow Mosiac Virus
P_zucyellmosiacvir1 Zucchini Yellow Mosaic virus(ZYMV) is one of the most economically important viruses and can infect pumpkin, squash, summer squash, melon, watermelon, other cucurbits plants. Symptoms. This disease stunts the plants and causes the leaves to have a...
Caused by:- A Mosiac virus
Control:- The first thing is to only use seed sourced from a reputable source...

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