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By Cynthia

Michigan, United States Us

The leaves on my Hollyhocks are brown/yellow. Does this mean too much water?



If the leaves have a brown powder on the back side, they are probably suffering from rust, a fungus spread by overhead watering, including heavy rain. I would prune off the worst of the leaves, and spray the rest with neem oil. A mild case of overwatering causes stunting and yellowing. A bad case will cause the plant to wilt, and not come back with further watering--the roots have rotted.

31 May, 2010

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