Anthracnose—Elsinoe spp.
Anthracnose causes spots on canes. The spots, which have purplish margins surrounding lighter centers,
expand and may cover the stem. Spots on young leaves are yellow and have a narrow, purplish margin. Their
centers often fall out as leaves expand, leaving a hole. Stems and canes may crack and die.
Solutions
The fungus that causes Anthracnose overwinters in canes and infects new growth in the spring. Remove
and destroy infected canes, stems, and leaves as soon as symptoms appear. Keep plants pruned. Normally,
treating canes in the dormant season with Bordeaux just before buds break should be sufficient
control. | 
Purplish spots forming on canes
Purplish
spots forming on leaves
|
