Is oozing sap on peach trees caused by borers or gummosis?

Question

ForwardPlant Team · Accepted Answer

Oozing sap on peach trees, often called "gummosis," can be caused by both borers and abiotic stress. While borer activity, specifically from pests like the Peachtree Borer, can induce sap flow as the tree tries to wall off the damage, gummosis can also result from environmental factors, mechanical injury, or disease without insect involvement. It's crucial to inspect for borer entry holes and frass to differentiate the cause.

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