Tree sap

Sap is the thin, watery fluid inside plants that circulates food and water to the various parts of the plant.

Maple tree sap is commonly used in the production of maple syrup. The sap of the rubber tree is used to make latex, which is vulcanized to make rubber.

Other non-tree plants also have sap, such as euphorbias (including poinsettias) and milkweeds, although the word sap is commonly only used to refer to trees.