Category: Plant husbandry

Symptoms: Flowers are single, not double during spring on varieties that should flower double in the spring.

Parts Affected: Flowers

Cause: There is no mature last seasons wood.

Description: These varieties need mature last seasons wood to produce double flowers. If they are pruned during late autumn, the wood is not old enough to produce double flowers.

Remedy: Keep pruning to a minimum until after the first flush of flowers in the spring.