Azalea stems black
Last year I noticed a green fungus starting on outer stems of my azalea plants. Leaves and flowers were smaller than other branches without fungus. This year I noticed along with smaller leaves and flowers the stems have turned black. I don’t see any nymphs sucking along bark as I have on my holly bushes. Can these be saved? Can I treat with a horticultural oil like Neem?
Montgomery County Pennsylvania
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