Thoroughly cover all areas under the plant and at least a 10 foot radius around each plant. Applications of a foliar fungicide at the first sign of disease and at 7-14 day intervals is effective. Young leaves and buds may be infected. Leaves become thickened and succulent and may be larger than normal. The color changes from light green to nearly white.
Little damage occurs but the plant appears abnormal or diseased.
Pick young galls and destroy. Spray with fungicide before leaves open. Various sized spots on the leaves. Small, black pinpoint dots may be in the dead leaf areas. Control requires preventive fungicidal sprays at two week intervals.