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Over ten years, Gerry Daly answered more than 5,000 gardening questions. His knowledge is based in science and practical experience, and by working on radio and television. Access to the advice database is open

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Questions › Author "ita-magnolia"
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Rose Mildew
I have 2 roses in a half barrel facing south. One is Dorothy Perkins and covered in mildew. It is growing slowly I have sprayed with Rose clear but no good?
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Black scum on holly

I have a variegated holly with black kind of scum on the leaves. The holly is 4 foot tall doing well but should I be worried?

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