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?
How Long Will Sap Rise for in a Oak Tree
Certified GKH Gardening Expert
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.