Hot, dry springs with predominantly southwest winds usually indicate increased problems with this disease. No chemical controls are effective. Use row covers to protect tomato plants from the leafhopper. Stems may become distorted, giving the bush a zig-zag appearance. To confirm psyllids, check the undersides of leaves for nymphs.
Nymphs are about the size of an aphid.
At first, they are yellow, then they turn green. They are sedentary while feeding and secrete small, white granules that resemble sugar. For best control, dust the foliage, especially the undersides, with sulfur. See fact sheet 5.540, Potato and Tomato Psyllids . The adults chew small holes or pits in leaves.