problem-leaves curling inward & blackening

valeriepa(z5-6 NEPA)June 13, 2005

Hardy hibiscus is about 2 1/2 feet tall. Leaves at the tips are curling inwards and are turning black. I have other hisbicus plants nearby and they are healthy so far. Does anyone know what this is and what I can do?

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jenny_in_se_pa(USDA7 Sunset 32)

Do you see any insects on it? There could be scale or aphids on it and their excretions of honeydew end up causing sooty mold to form on the leaves (which would then put a black coasting on the leaves).

    Bookmark   June 15, 2005 at 2:40PM
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jenny_in_se_pa(USDA7 Sunset 32)

Should read: black "coating" not "coasting". ;-)

    Bookmark   June 15, 2005 at 2:44PM
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Look underneath the leaves and see if there are insects. I'm sure if you have sooty mold, you have insects of some sort.

    Bookmark   June 15, 2005 at 6:25PM
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