WSU Extension

Hortsense

Rose
 
Disease
Black mold 
Black spot 
Botrytis bud and twig blight 
Brand canker 
Bullheading (cold damage) 
Common canker 
Crown gall 
Downy mildew 
Powdery mildew 
Rust 
Viruses 
Insect
Leafcutting bees 
Leafrollers 
Redhumped caterpillar 
Root weevils 
Rose aphids 
Rose galls 
Rose leafhopper 
Rose midge 
Roseslug 
Spider mites 
Thrips 
Tobacco budworm 
Western spotted cucumber beetle 



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Caption: Rose leafhopper damage
Photo by: A.L. Antonelli
  
Rose : Rose leafhopper
(revision date: 4/11/2018)


Biology
Rose leafhoppers are small, active, whitish-green insects which hop when disturbed. The nymphs (immature) are white with red eyes. Rose leafhoppers feed on the leaves, causing white or pale blotches that resemble, but are larger than, spider mite stippling. Cast skins can be found on the underside of leaves. The adults lay eggs in the bark, causing small dark spots on the canes. The emerging nymphs cause wounds to the bark which may provide a site for fungal infections. Leafhoppers are rarely a serious concern.
Management Options


Non-Chemical Management
  • Several natural predators feed on leafhoppers, including damsel bugs and assassin bugs. Avoid use of broad-spectrum insecticides which may kill these predators.
  • Leafhopper damage is mainly aesthetic. Tolerate it, if possible.
Select non-chemical management options as your first choice!

Chemical Management

Apply when leafhoppers and nymphs are noticed. Avoid using Sevin (carbaryl) if there is any possibility of pesticide drifting onto nearby blooming plants. These products are toxic to bees.

Listed below are examples of pesticides that are legal in Washington. Always read and follow all label directions.
  • Bonide Eight Insect Control Garden & Home R-T-U
    Active ingredient: permethrin  |  EPA reg no: 4-406
  • GardenTech Sevin Conc Bug Killer
    Active ingredient: carbaryl  |  EPA reg no: 264-334-71004
  • This list may not include all products registered for this use.
Images

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Caption: Rose leafhopper damage
Photo by: A.L. Antonelli
Caption: Rose leafhopper
Photo by: Unknown