GEUM DISEASES
GEUM DISEASES
Powdery mildew may be seen occasionally. Sprays of sulfur or benomyl control the white powdery coating caused by the disease.
Leaf spots are rare on geum. No chemical control is listed.
Downy mildew caused by Peronsporae potentillae may be an occasional problem. No chemical control is listed.
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by the editors of Old-House Interiors magazine
by the editors of Old-House Interiors magazine
