Oak Trees

How Long Will Sap Rise for in a Oak Tree

jackall added on May 25, 2012 | Answered

We have a large woodland oak next to our garden and the sap is covering everything. How long will this sticky mess go on for?

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Certified GKH Gardening Expert
Answered on May 28, 2012

If you are still seeing "sap", then it is not sap. It is honeydew and the tree has a pest infestation (likely aphids). It needs to be treated with a pesticide, preferably a systemic one like neem oil. That should clear up the situation.

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