Yes, Oakley that link is really helpful too. This disease is really devastating. It only affects us here when the weather is hot and humid - usually not for long. But a couple of weeks is enough to defoliate the plants that are in the line of fire - breeze from greenhouse windows. I have since done a lot of work on the area near the greenhouse, made new beds for garlic etc. Weeded right out, and that has reduced the incidence since then. But I didn't know about the potassium bicarbonate or anything else that could be used to protect the plants.
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