Another great resource for diagnosing plant problems in the
San Francisco Bay Area is the Sick Plant Clinic held at the University of
California Botanical Garden in Berkeley the first Saturday of the month (always good to check the calendar). The clinic is
free.
The symptoms may vary with the seasons. I visited the Sick Plant Clinic in October. We saw rust on a pear leaf (pome/juniper rust); leaf miner trails and a woolly aphid cocoon on an apple leaf; a leaf distortion on a Chilean Coyote Bush; scales on a citrus leaf; sun burned Jasmine leaves; and black sooty mold on Bay leaves. I’m planning to visit again in the spring for a glimpse of diseases that manifest as the weather warms and plants start to bud.
Bring in your container plant or plant part for evaluation.
(Cover the plants and disease samples in containers or
bags before entering the Garden to protect other plants). Microscopes, reference books, and plant and insect experts are available for consulation. Expect to be grilled with questions about the plant symptoms and the plant environment.
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| Leaf miner trail to the left, and woolly aphid cocoon to the right (partially obscured by the stem). |
The symptoms may vary with the seasons. I visited the Sick Plant Clinic in October. We saw rust on a pear leaf (pome/juniper rust); leaf miner trails and a woolly aphid cocoon on an apple leaf; a leaf distortion on a Chilean Coyote Bush; scales on a citrus leaf; sun burned Jasmine leaves; and black sooty mold on Bay leaves. I’m planning to visit again in the spring for a glimpse of diseases that manifest as the weather warms and plants start to bud.
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