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Leaf galls (various insects) |
Raised bumps of various sizes and shapes. |
Does not affect plant vigor. See MU publication G 7272. |
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Powdery mildew (fungus) |
Powdery white growth on either leaf surface. |
Control rarely necessary. |
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Witch's broom (fungus-mite complex) |
Widespread. Unsightly clusters of dwarfed twigs. Twig die back. |
No chemical control is available. On small plants, cut off clusters back to healthy wood. |
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| University Outreach and Extension does not endorse commercial products. Follow the label on all pesticides. |
