Leaves are curled, rolled or crinkled

Newly expanding leaves have small blisters.

Gooseberry Mite

Leaf damage caused by gooseberry mites infesting newly expanding Ribes curvatum Sm. leaves.

• Causal organism: Cecidophyopsis grossulariae Collinge, Europe
• Crops affected: Black, red, white and ornamental currants, gooseberries, species

This gooseberry mite can cause dormant buds of currants and gooseberries to swell somewhat (but not into a ball). During the winter, the mites remain inside the bud scales and feed on the developing bud tissues. In the spring (in April or May), the mites emerge and begin feeding on young developing gooseberry leaves.

See also: Dormant buds are "blind"