WSU Extension


Armillaria root rot 
Bacterial canker 
Brown rot blossom blight and fruit rot 
Crown gall 
Cytospora canker 
Dead bud 
Gumming (Gummosis) 
Leaf spot 
Little cherry 
Mottle leaf 
Necrotic rusty mottle 
Powdery mildew 
Prunus necrotic ringspot 
Shothole (Coryneum blight) 
Verticillium wilt 
Witches'-broom (Cherry leaf curl) 
Apple-and-thorn skeletonizer 
Black cherry aphid 
Brown marmorated stink bug 
Cherry bark tortrix 
Cherry fruit fly 
Cutworms and armyworms 
Peachtree borer 
Pear slug (Cherry slug) 
San Jose scale 
Shothole borer 
Spider mites 
Spotted wing Drosophila (SWD) 

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Caption: An adult European earwig
Photo by: M. Bush
Cherry : Earwigs
(revision date: 3/10/2017)

Earwigs are reddish-brown insects about 3/4" or less in length. Both males and females have pincers at the rear end. Earwigs are largely beneficial, feeding on many pests such as aphids, mites, and nematodes, as well as on algae, fungi, and decaying plant material. However, earwigs can also damage plants. They sometimes feed on flowers, shoot tips, leaves, or fruit. Damaged shoot tips may fail to develop properly, sometimes stunting growth. Damaged leaves exhibit small to large holes. Fruit damage typically consists of shallow, irregular areas chewed into the surface.
Management Options

Non-Chemical Management
  • Rolled newspapers or flat boards placed beneath trees can serve both as monitoring devices and as traps for earwigs, which prefer narrow, enclosed hiding places.
  • Remove tree wraps, which may provide shelter for earwigs.
  • Cultivate the soil in early spring to disturb nests and expose eggs to predators.
  • Apply Tanglefoot or other sticky material to plastic wrapped tightly on the trunk to prevent the earwigs from crawling up.
Select non-chemical management options as your first choice!

Chemical Management

Apply around the bases of trees and on trunks as well as under vegetation and on trash if they are present.

Listed below are examples of pesticides that are legal in Washington. Always read and follow all label directions.
  • Azamax Botanical Insecticide, Miticide, & Nematicide [Organic]
    Active ingredient: azadirachtin  |  EPA reg no: 71908-1-81268
  • Safer Brand BioNEEM Multi-Purpose Insecticide & Repellent Conc [Organic]
    Active ingredient: azadirachtin  |  EPA reg no: 70051-6-42697
  • Safer Brand Insect Killing Soap with Seaweed Extract II [Organic]
    Active ingredient: potassium laurate  |  EPA reg no: 42697-59
  • This list may not include all products registered for this use.

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Caption: An adult European earwig
Photo by: M. Bush
Caption: European earwig
Photo by: Unknown