Canker Posted on September 13, 2016November 10, 2022 by PlumeriaDB ALL0-9ABCDEFGHIJKLMNOPQRSTUVWXYZ Share This Tweet Share A plant lesion where part of the plant quits growing and the surrounding parts continue to grow. Sunken, discolored, dead areas on twigs or branches, usually starting from an injury, wound, or pathogen. Related Images:Related Articles: Disease and Disorders