How to Manage Pests

Pests in Gardens and Landscapes

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 canes

Purplish spots forming on leaves
Purplish spots forming on leaves


Statewide IPM Program, Agriculture and Natural Resources, University of California
All contents copyright © 2014 The Regents of the University of California. All rights reserved.

For noncommercial purposes only, any Web site may link directly to this page. FOR ALL OTHER USES or more information, read Legal Notices. Unfortunately, we cannot provide individual solutions to specific pest problems. See our Home page, or in the U.S., contact your local Cooperative Extension office for assistance.

Agriculture and Natural Resources, University of California

Accessibility   /PMG/GARDEN/FRUIT/DISEASE/canthracnose.html revised: January 8, 2014. Contact webmaster.