Plum, flowering (Prunus)-Leaf curl plum aphid

Anuraphis helichryse

See:

Common Pests of Nursery Crops

Pest description and crop damage Causes extreme leaf curling.

Management- biological control

See:

Biological Control of Nursery Pests

Management-chemical control

To be effective, applications must be made early, before leaves curl. It is important to cover foliage thoroughly, including lower leaf surfaces. Apply oils in dormant or delayed-dormant periods.

See:

Chemical Control of Nursery Pests