WSU Extension

Hortsense

Plum, Prune (Fresh)
 
Disease
Armillaria root rot 
Bacterial canker 
Black knot 
Brown rot 
Crown gall 
Cytospora canker 
Plum pockets 
Russeting 
Shothole (Coryneum blight) 
Silver leaf 
Virus diseases 
Insect
Aphids 
Apple-and-thorn skeletonizer 
Brown marmorated stink bug 
Earwigs 
Fruittree leafroller 
Leafhoppers 
Pacific flatheaded borer 
Peach twig borer 
Peachtree borer 
Pear slug 
Scale insects 
Shothole borer 
Spider mites 
Spotted wing Drosophila (SWD) 



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Caption: Leafhoppers and damage on apple
Photo by: E.H. Beers
  
Plum, Prune (Fresh) : Leafhoppers
(revision date: 5/20/2014)


Biology
Leafhoppers are typically found on the underside of leaves. Immature leafhoppers (nymphs) are usually less than 1/10" long and white to greenish or yellowish in color. Adults are white and about 1/8" long. Leafhoppers resemble aphids but are larger and more active. They feed by sucking plant juices, often causing damaged leaves to develop a white to yellow speckling or mottling. Severely damaged leaves may turn brown and shoots may curl and die back. Feeding leafhoppers produce honeydew, a sweet, sticky material which may attract ants or become covered with a dark growth of sooty mold. Leafhoppers rarely cause serious damage to plants, although very heavy infestations may result in premature leaf drop and small fruit.
Management Options

Non-Chemical Management
  • Several insects feed on leafhoppers including damsel bugs, assassin bugs, and parasitic wasps. Avoid use of broad-spectrum insecticides which kill beneficials.
Select non-chemical management options as your first choice!

Chemical Management

None recommended

Images

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Caption: Leafhoppers and damage on apple
Photo by: E.H. Beers
Caption: Leafhopper
Photo by: E.H. Beers