This is a common fungal disease that can attack any herbaceous plant, though peas and beans are particularly susceptible. Some woody species, like roses, are also vulnerable. It is easily recognizable by the gray or white powdery splotches on leaves, buds, and stems (the powder is the fungal spores and filaments). Though the fungus is spread by water or humid air, it needs a dry surface to establish itself. Water plants in the morning to allow leaves to dry before night. Encourage air circulation around leaves by staking and keeping beds cleaned of weeds and debris. Sulfur is a last-dtich control. A dilute solution of baking soda in water should be tried first.
fungal disease that produces spots or white patches on leaves, shoots and other plant parts
Occurs mostly in chile and grapes. Foliar disease that causes leaf curling and premature leaf drop. This exposes the fruit to the sun, resulting in sun scald.
A fungal vine disease common to cooler climates which can lead to crop losses.
fungal disease of the vine.
is a fungus that appears as a white fuzzy coating on the upper leaves. Plants susceptible: beebalm, calendula, coriander, germander, lemon balm, tarragon, and yarrow. Foliage will eventually wilt, brown, and drop. If detected early, it can be eliminated by spraying with a solution of 1tsp. baking soda to 1 quart water. See Remedies for Plants for more solutions.
Condition caused by a fungus which thrives during high humidity and poor air circulation, especially after sudden changes in temperature. The fungus appears as a light gray powder which grows superficially on the leaves and flowers of African Violets. More information.
A fungal disease that appears as a white powder coating the surface of the leaves. Can be the result of leaves that remain wet for too long with inadequate circulation. Clip back leaves to improve circulation and spray with a baking powder and water mixture or a commercial fungicide.
Powdery mildew is a fungal disease that affects a wide range of plants. It is one of the easier diseases to spot, as its symptoms are quite distinctive. Infected plants will display white powder-like spots on the leaves and stems.