Why is my pin oak dripping sap?

Your pin oak may be dripping sap due to a few reasons, such as stress from environmental factors like drought or excessive heat, which can cause the tree to produce more sap. Additionally, damage from pests, like aphids or borers, can lead to sap exudation as the tree reacts to injury. Fungal infections or diseases may also contribute to this phenomenon. If the dripping sap is excessive or accompanied by other symptoms, it might be worth consulting an arborist for further evaluation.