Another powdery mildew victim

Powdery mildew — an ever present danger in Colorado gardens. To battle it on a peony I am trying a top coat of a mouthwash solution. Paeonia ‘Dr Alexander Fleming’ 9/4/2016 powdery mildew. 30% solution mouthwash applied to leaves.  Trimmed lower leaves. 11/1/2016  Update The mouthwash treatment kept mildew at bay for a couple weeks, […]

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