SPIREA DISEASES

OHI The editors of Old-House Interiors magazine

SPIREA DISEASES

Fire blight causes the leaves to appear scorched. The twigs tips die back and dead leaves hang on blighted branches. There is no satisfactory chemical control. Prune out infected branches and avoid high nitrogen fertilizer.

A leaf spot may infect the leaves. Use basic copper sulfate.

Powdery mildew forms a white coating on the leaves. Use benomyl or sulfur.

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by the editors of Old-House Interiors magazine