Put on gloves and protective eyewear when applying the fungicide. The fungus normally clears as the weather warms, but scale sometimes requires the use of an insecticide. Grown on honeydew secretions secreted by several types of insects, Black Sooty Mould is a common term which is used to name the types of fungi that cause this particular problem on leaves of many of the evergreen plants. Determine whether your sooty black mold is caused by scale. Also, help answer other questions about General Gardening and Hibiscus Plants, and plants at GardeningKnowHow.com … © Copyright 2020 Hearst Communications, Inc. Fungal Diseases Leaf spots: Several species of fungi may cause brown or black circular or irregular shaped spots on the leaves. Don't apply the fungicide on a windy day or when rain is expected in the next 24 hours. It is a type of mold that grows in the honeydew or secretion of many common plant pests, such as aphids or scale. Onions Onion Black Mold Info: Managing Black Mold On Onions. Most plants affected by this plant mold growth will also have some sort of pest problem. Black spots and yellowing leaves on hibiscus often indicate a fungal infection or leaf scale. When watering the plant, avoid contacting the foliage or flowers with the water because this creates ideal conditions for the mold spores. Replace old mulch as needed. When your plants have black sooty mold, your real problem is caused by the insects, such as aphids, whiteflies, mealybugs and scale. How To Get Rid Of Black Sooty Mold. Sign up for our newsletter. If your plants are potted, space them out and separate the infected ones to increase air flow and minimize the risk of exposure to healthy plants. A. There's black stuff called sooty mold that grows on the honeydew secreted by aphids, mealybugs, scale, etc. This plant mold growth is generally not lethal to plants, but the pests that it needs to grow can kill a plant. Hibiscus plants (Hibiscus spp.) Appropriate cultural care is key to removing gray mold and preventing a new infection. Some plants, like gardenias and roses, which are prone to pest problems, will be more susceptible to this plant mold growth. The dark nature of the fungi gives the plant an appearance of a layer of soot that covers the plant. Treating plant mold like sooty mold is best done by treating the source of the problem. The pests cover the leaves of your plant in honeydew and the sooty mold spore lands on the honeydew and begins to reproduce. Help answer a question about black mold on hibiscus - Gardening Know How Questions & Answers. If the hose doesn't do the trick, you can use a wet cloth to wipe the black fungus off the leaves. Since the mold doesn't infect the inner tissue of the plant, it can be wiped off the leaves. Shelley Marie has been writing professionally since 2008 for online marketing and informational websites. Pumpkins Using Pumpkin Molds: Learn About Growing Pumpkins In Molds. Pictures would help, but I think Barb is right. Black Spot Fungicide. Add three teaspoons of … Your plant’s twigs, branches or leaves will be covered in a grimy, black soot. The pests cover the leaves of your plant in honeydew and the sooty mold spore lands on the honeydew and begins to reproduce. How to Cure Mildew on Hibiscus. black mold on hibiscus. Sooty mold is a type of plant mold. In Queensland, Black Spot's a major problem with roses, but this fungicide mixture works miracles. belong to a family of over 300 species of warm-weather tropical shrubs and trees that produce large, colorful flowers. Dew forms on the leaves early in the morning and remains … It infects most parts of the plant and usually appears as water-soaked lesions or tannish-colored spots on the foliage and flowers. Black Sooty Mould on Plants. She holds a Bachelor of Science in business administration and an associate degree in medical billing and insurance coding, both from Herzing University.