Gumming

Amber or dark gum oozes from branch crotches or trunks, often following injury or environmental stress that triggers the plant response. This symptom is frequently a defense reaction to canker fungi or bacterial infection at the wound site. Improve overall tree vigor with proper irrigation and care, avoid creating unnecessary pruning wounds, and investigate any underlying disease discovered during inspection.

Control insects and fungus diseases. In large cankers, cut away all dead tissue until a sound surface is exposed.