Roman Gonzalez is the creator of the urban gardening blog MrBrownThumb, founder of the Chicago Seed Library, and a co-founder of One Seed Chicago. Powdery mildew is a widespread and easy to recognize ...
Every year about midsummer, I start getting a lot of questions from people wanting to know what those white or gray powdery spots are on their plants. They often cover most if not the entire leaf ...
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