Since all trees produce sap, every species of tree is susceptible to sap leakage. However, certain trees are more resistant to sap-inducing diseases and pests, and planting these types of trees will help reduce the chance of sap-related problems.

What trees have no sap?

The number one tree is the English oak. Overall the oak does not produce much sap, but it also is resistant to sap-inducing diseases, as well as pests that could cause more sap. The same is true with the Japanese snowdrop tree, which can grow up to 25 feet with blossoms.

What trees have sap in them?

As well as maples there are a few other trees that produce edible sap. The white walnut (Juglans cinerea), black walnut (Juglans nigra), heartnut (Juglans ailantifolia) and the English walnut (Juglans regia) will all yield tasty sap, with the heartnut boasting sugar levels comparable to the sugar and black maples.