Rose leafhopper
Edwardsiana rosae
191 host plants
Last updated
Fine white stippling on the upper surfaces of rose and maple leaves signals rose leafhopper feeding, as these small, pale green insects pierce leaf undersides and extract cell contents. You will see the tiny, wedge-shaped adults hop or fly away quickly when disturbed. Cast skins from molting nymphs accumulate on leaf undersides. Damage appears from late spring through fall on roses, maples, and many other deciduous hosts.
Tolerate light stippling on vigorous plants, as the damage is cosmetic and does not threaten plant health. Strong water sprays dislodge nymphs from leaf undersides. Parasitic wasps and general predators help suppress populations. Remove leaf litter in fall where eggs overwinter. Insecticidal soap targets nymphs directly if populations warrant intervention.
Quick Reference
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.
Cultural Controls
- 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.