Mold? on Ninebark Physocarpus Opul.Coppertina
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Funny, I have it on one branch of some winterberry hollies…which I have never seen before. Very weird. Does it look anything like any of these?
http://ohioline.osu.edu/hyg-fact/3000/3047.html
On my holly the mildew is white and almost crusty, yet when I rub it with my fingers it doesn’t dislodge…just stays put. Like the leaf was painted white or dipped in a sugary crust.
Apparently mildew from one species doesn’t care about other kinds of plants (so lilac mildew is not interested in your Physocarpus, and vice versa). But what I wonder is why it has come back again. Is you plant in a good airy light spot?
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