Maine Organic Farmers and Gardeners Association
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Minimizing Infection by Basil Downy Mildew

Downy mildew on basil

Downy mildew on basil

June 4, 2015

In his first pest report for the season, MOFGA's Eric Sideman covers basil downy mildew, which can begin as a pale yellow color on the tops of leaves and may eventually kill plants. Sideman discusses resistant types of basil but says the common sweet basil is most susceptible. To help minimize problems, "anything that will make the leaves dry quickly will help, e.g., weed control, good spacing, venting tunnels, watering in the morning instead of the evening, etc. I make new plantings every 3-4 weeks in hopes that if the spores come in and infect one planting I can destroy it so it does not release spores, and I have another planting waiting in the wings." Learn more by reading the pest report.

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