Peach Tree with Sticky Ooze - Knowledgebase Question

Phoenix, AZ (Zone 9A)
Question by conkhicon200
September 17, 2006
What causes a sappy, glue like substance on the bark of my peach tree?


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Answer from NGA
September 17, 2006

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It is difficult to diagnose a problem without seeing it, and oozing sap may be normal for your tree or may indicate an injury from disease or insects. Peach borer injury usually shows up as a sap oozing from the tree, or an amber-like bubble (hardened sap) on the trunk or crotches. The hardened sap will cover an insect hole that may be filled with frass or a sawdust matter. The bark will feel loose in the area around the injury. Tunnels will be present beneath the bark when it is peeled back or whittled away. The Peach Tree Borer is white and about an inch long. It works on the tree close to the ground. Adult moths appear in July and August, lay eggs and damage occurs soon thereafter as eggs hatch into larva.

You may want to poke around the area where the sap is oozing to see if you can find evidence of insect pests.

Best wishes with your peach tree!

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