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#290546 Reply

E. Vinje
Keymaster

Hello –

Anthracnose is a fungal disease that overwinters in soil and garden debris. Cool wet weather promotes its development, and the optimum temperature for continued growth of the spores is between 75-85˚F. Moisture is required for development and germination of the fungus as well as for infection of the plant. It is spread by wind, rain, insects and garden tools. Here’s how to control anthracnose without using toxic fungicides and sprays.

1. Keep the soil under plants/ trees clean and rake up any fallen debris immediately.

2. Add a good amount of organic compost or mulch under plants and trees. Mulches will prevent fungal spores from splashing back up onto flowers and leaves.

3. Water in the early morning hours, or use a soaker hose, to give leaves time to dry out during the day.

4. Apply Liquid Copper (0.5 to 2.0 fluid ounces in a gallon of water) just before buds begin to swell, and repeat twice, at 7-day intervals.

Hope it helps!