[ad_1] It can be unnerving to find that the leaves of an oak or hackberry tree are as bumpy as a rock-covered seashore in late summer. Other trees’ leaves may break out in acne-like red spots or sport projections as bristly as a porcupine. “Chances are, those strange growths are galls,” said Sharon Yiesla, plant… Continue reading Galls on plants are mostly harmless, expert says