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Black On Gardenia Leaves

Black on gardenia leaves

Black on gardenia leaves

Black, sooty mold then grows on the honeydew. Get rid of the bugs and the mold will go too. To do this, spray your gardenias according to label directions with horticultural oil, making sure to wet both the tops and undersides of the leaves, as well as the stems. You may have to spray more than once.

Why are my gardenia leaves black?

The black stuff on the leaves is a fungus called sooty mold. It doesn't attack plants directly. Instead, it grows on the sticky honeydew secreted by sucking insects feeding on the plant.

How do you get rid of sooty mold?

Once sooty mold is established, it is not easy to remove. The best method to remove the mold is to soak affected plants in a water and detergent mixture. Use 1 tablespoon of household liquid detergent per gallon of water and spray it on the plants.

How do you get rid of fungus on gardenias?

Fungicides are most effective against powdery mildew when used early in the disease development process. Recommended fungicides include myclobutanil, thiophanate-methyl, chlorothalonil, propiconazole, and horticultural oil with baking soda. Some control may be obtained by sprays of sulfur or neem oil.

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