Some of the leaves appear pale green to yellow and may drop prematurely. The bark is encrusted with small, hard, raised bumps that are light-colored or dark-brown bumps with raised yellow centers. There may be severe limb dieback. The fruit may be mottled or spotted.
Uncontrolled scales can kill large branches after 2 or 3 seasons. Apply an insecticide that''s lableled for these pests, following label directions.