MONARDA DISEASES

By The Old House Web

MONARDA DISEASES

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The only serious disease problem is powdery mildew which must be controlled to prevent defoliation. The disease may completely cover the plant with a white powdery growth then the leaves yellow and drop. Spray with benomyl or sulfur.

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Powdery mildew on monarda - 76K Powdery mildew on monarda - 50K
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