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Old July 29th, 2010, 05:16 PM
aslan aslan is offline
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Lp the white powdery substance on your lilacs is actually called powdery mildew..it does't hurt the plant at all. You can prune the lilac so it gets more air but it will probably still get the white powder anyway.

the tomatoe plants could be a few differant things..the dandelions you can use vinegar on,,also helps with foxtail, velvetleaf, smooth pigweed and thistle.
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