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These small sap-sucking insects cause mottling on the leaves of roses and some other rosaceous trees and shrubs.
Rose leafhopper (Edwardsiana rosae) on rose
There are several species of leafhopper that can be encountered by gardeners, they are sap sucking true bugs
Rose leafhoppers feed on the leaves of roses and some other rosaceous trees and shrubs such as hawthorn and rowan. They are seldom a significant pest of any plants but roses in Britain.They readily jump away if disturbed and can cause a mottling on leaves of affected plants, especially those in hot dry situations.
Pale, coarse, mottling is seen on the upper leaf surface of roses. Over time, the mottled area can expand leaving foliage looking blanched. Heavy infestations can cause leaves to turn brown and fall prematurely.
Although damage is often unsightly roses are able to withstand heavy attacks and where possible damage can be tolerated. These insects have many natural enemies and in many cases natural processes will limit damage.
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The pale yellow adult insects are 3.5-4mm long and sit with their wings folded back over their bodies. When disturbed, the adults readily jump and fly short distances. The leafhoppers overwinter as eggs inserted in the leaves and young shoots which hatch in May. The creamy white immature stages, known as nymphs, then begin to feed on the lower leaf surface. They reach the adult stage in July and lay eggs which hatch to produce a second generation. Overwintering eggs are laid in the autumn but in mild areas the adults may persist until late winter.
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