Lilac mildew?

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woodspirit1 Lake Toxaway, NC(Zone 7a) Oct 01, 2007

My lilac has a lot of (what I think is) powdery mildew. We have had quite a drought this year but have not watered it much. Is that the probleml?

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Leftwood Saint Bonifacius, MN(Zone 4a) Oct 01, 2007

Powdery mildew is common on lilacs and usually it is easily tolerated by the shrub. Yes, it can be worse on stressed plants, but I wouldn't worry about it this late in the season anyway.

Powdery mildew is always on the upper surface of the leaves, and looks like a calcium residue from water or white powder, but it doesn't blow off or rub off. If your talking about common lilacs or french lilacs, you'd be hardpressed to find one that was not infected. It just a fact of lilac life.

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woodspirit1 Lake Toxaway, NC(Zone 7a) Oct 02, 2007

thanks so much.

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