CALTHA DISEASES
CALTHA DISEASES
Leaf gall caused by Synchytrium aureum disfigures the leaves. Infected leaves are picked off and burned. No chemical control is listed.
Leaf spots can be caused by various fungi. These are usually not serious and no chemical control is listed.
Powdery mildew causes forms a white coating on the leaves. This disease is controlled with applications of benomyl of sulfur.
