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Powdery Mildew Remedy

I have found the most effective cure for powdery mildew is Ultrafine 
Horticultural Oil.  Not only does it make the mildew become invisible upon 
spraying, it kills the fungus by smothering it.  It also kills insects, is 
nontoxic, and
can be sprayed on most foliage without damage. I use it on my clematis all of 
the time.
Bill Bird zone 6  NY


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