As its name implies, the most common and striking symptom of leaf curl occurs on the foliage. Infected leaves are severely deformed and often display a variety of colors ranging from light green and yellow to shades of red and purple. The fungus causes cells at leaf margins to reproduce quickly and randomly, resulting in leaves that are wrinkled, puckered, and curled. As these infected leaves mature, the fungus produces spores, giving them a dusty appearance, after which the leaves turn brown, shrivel, and drop from the tree. The fruit can also be affected by the fungus, either falling off the tree prematurely, growing in abnormal shapes, or developing wart-like deformities on the surface.