Rose Diseases
F.L. Pfleger and S.L. Gould
Copyright © 2012 Regents of the University of Minnesota. All rights reserved.
Roses are vulnerable to many diseases. Fortunately, few of these diseases are common in Minnesota. Black spot, powdery mildew, and Botrytis blight may afflict Minnesota’s roses. Other diseases in the state are rust, cankers, crown gall, wilt, and viruses.
Such diseases can be managed by following these recommendations:
Buy certified stock free of disease;
Keep plants free of weeds, fallen leaves, and disease-infested plants or canes;
Use spray programs and cultural methods suggested in this fact sheet.
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