This whitish-gray coating on the leaf undersides is a sign that downy mildew disease is about to take down your impatiens flowers. Gardeners are wondering if it's OK to plant old-fashioned bedding ...
Dear Roger: Do you have any idea what’s eating the flowers off my impatiens? — Terry Tew, Fayetteville Dear Terry: The photo you sent in your message shows classic effects of impatiens downy mildew.
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