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杨梅炭疽病，以抱子和菌丝在被害树的嫩梢上越冬，次年传播为害。杨梅叶片被害初期，两面产生圆形或椭圆形灰白色病斑，扩大后呈黑色小粒点，晴天病斑易破裂穿孔；嫩梢被害，则布满点点病斑，逐渐变成秃枝。一般在５月上中旬开始发病，８月上中旬进入发病高峰期，常造成大量烂?
Bayberry anthracnose, with spores and mycelium wintering in the young shoots of young trees, the following year spread harm. Myrica rubra leaves were initially killed, both sides have round or oval gray spots, enlarged black small particles, sunny lesions easily rupture perforation; tender shoots were injured, then covered with little spots, and gradually become bald branches. Generally onset in mid-May onwards, in mid-August into the peak incidence, often resulting in a lot of rot?