Unless you are intent on making your own maple syrup, you probably haven't given tree sap much thought. So, let's take a deeper dive into a tree's 'blood' or sap and the normal flow in the fall for ...

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 ...

Rows of uniform holes, either horizontal (most commonly) or vertical, might look like an insect attack, but they are more likely caused by a bird with an unusual name – the yellow-bellied sapsucker ...