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| Cherry blackfly |
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Cherry blackfly over winter as eggs, on both fruiting cherries and ornamental cherries,
Japanese cherries are generally unaffected.
The black aphids normally hatch out in April, and between May and July they settle on the underside of the leaves that have formed on the new shoot tips.
They generally remain on these leaves from mid to late summer causing the leaves to curl up
This damage is more unsightly than damaging, and does not affect the fruiting varieties producing a crop
The infestation dies out when the aphid migrate in autumn when they lay their eggs near the cherries buds.
Small trees can be sprayed in the winter with a winter tree wash to reduce the number of over-wintering eggs.
Spray fruiting trees in late spring with a suitable insecticide
note; Sprays are ineffective once leaves have curled up.
Ornamental cherries can be sprayed with pravado bug killer
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