Synonym: Peach stem pitting.

Strains of the disease affect apricot, cherry, and peach, in addition to plum.

Conspicuous sunken areas form on trunks of infected trees. Enlarged areas of the trunks become flattened and ridged. Pitting and grooving develops in the woody cylinder. Initial pitting in naturally infected orchard trees always occurs at or below ground level, and extends for a short distance into the lower trunk and roots. The extent and severity of pitting, cambial and bark necrosis, enlargement of the trunk, and disorganization of xylem tissue within the woody cylinder increases with time.