Tree sap is the sticky substance you sometimes see oozing out of tree trunks. Pure maple syrup is the most widely known edible sap product, derived from the sap of the maple tree, but there are many ...

Q: I recently noticed a black, tar-like patch on my tree trunk, though it’s not tacky like actual tar. Are these insect eggs? Dried sap? Do I try to scrape it off? The tree has lichen but I don’t ...

We cut back our pine trees and sap dripped everywhere. It is now dry and staining the deck. Any suggestions? A: Sap from trees — pines or others — is a real problem on decks, especially after it dries ...