The flower buds die without List of files and visuals associated with this text. The disease is worse in spring. Cut out and destroy infected plant parts. No chemical control is listed.
Crown gall causes formation of roundish galls with irregular rough surfaces.
Galls above ground level should be pruned off and destroyed. Galls on the plant crown are not easily pruned off so destroy the whole plant. Avoid infested soil. No chemical control is listed. Rose anthracnose causes purplish brown, circular, one- half inch leaf spots.