Blackberry Diagnostic Tool

Flowers are damaged

Flowers are severed from the cane by the strawberry weevil in the spring.

Midge damage mimics winter injury, pistals and stamens of infested buds show varying degree of necrosis. Bits of flower parts or frass are sometimes visible.

Winter injury of the can happen when unusually late frost/freezes occur and kill flower buds. The flower on the left is healthy, the flower on the right was damaged and will not develop into a fruit.