Pelargonium Diseases
PELARGONIUM DISEASES
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Bacterial leaf spot causes spots on the leaves of garden plants, particularly if they are over crowded. The spotting will be worse on the lower leaves. The spots are small, circular or irregular, and brown and sunken. When the spots run together a portion of the leaf is killed. The entire leaf may turn yellow, then brown, then drop off. Use proper spacings and pick off and destroy infected leaves. No chemical control is listed.
Blossom blight or gray mold causes flower petal discoloration and flower drop. A gray mold may be seen on the leaves. Use applications of benomyl or chlorothalonil.
Cuttings may be attacked by stem rot or blackleg. The stems of cuttings turn black with rot. Use healthy cuttings and sterile rooting media. No chemical control is listed.
Bacterial fasciation causes formation of masses of short, thick and aborted stems with misshapen leaves near the soil line at the bottom two nodes. The plants are not killed but will be dwarfed. No chemical control is listed.
Visuals associated with this text.
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| Botrytis on geranium - 30K |
