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Powdery mildew can be an issue when days are warm and cooler nights with dew formation on leaves. Overcrowding an lack of aeration supports disease occurrence. The symptoms include white powdery patches on top section of the leaves which can cover the entire leaf under severe infection. Stunting and curling can also occur.
Powdery mildew can be an issue when days are warm and cooler nights with dew formation on leaves. Overcrowding an lack of aeration supports disease occurrence. The symptoms include white powdery patches on top section of the leaves which can cover the entire leaf under severe infection. Stunting and curling can also occur.

Magnolia diseases

Fungal causal agent: Microsphaera alni (M. penicillata); Phyllactinia corylea (P. guttata)

POWDERY MILDEW