White powdery spots on leaves. Use preventive fungicide. Spray with recommended fungicides at 7-10 day intervals. Include a spreader-sticker or detergent in spray mix to help wet leaves thoroughly. See Nematodes Other Than Root Knot.
Leaves dry out and cling to the stem.
Twigs are blighted and cankers are formed at the base of the main stem. The bark and wood of diseased portions become brown and the bark on the cankers may split, exposing the wood, Death occurs when the cankers completely encircle the twigs or stems. For climates in which winter killing is not a factor, the California privet is preferred for planting. Green scurf or algal leaf spot appears on twigs and limbs. Spray or dust with a copper fungicide recommended for general use on ornamental plants being careful to cover the underside of the leaves.