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Mold? on Ninebark Physocarpus Opul.Coppertina

Home › Forums › Organic-Gardening Questions › Pests and Diseases › Mold? on Ninebark Physocarpus Opul.Coppertina

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  • August 10, 2008 at 11:50 am #28336

    Anonymous

    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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Welcome! I’m Margaret Roach, a leading garden writer for 25 years—at ‘Martha Stewart Living,’ ‘Newsday,’ and in three books. I host a public-radio podcast; I also lecture, plus hold tours at my 2.3-acre Hudson Valley (NY) Zone 5B garden, and always say no to chemicals and yes to great plants.