maple sugaring

Assistant Professor of Environmental Science Aaron Stoler (right) and Research Assistant Joseph Russell tap red maple trees into a central tubing system to collect sap from the trees on Stockton’s Galloway campus.

GALLOWAY >> Maple syrup season has begun at Stockton University.

Early in 2020, the university received a $410,000 three-year United States Agriculture Department grant to promote maple sugaring in South Jersey through research and community outreach.

This fall, some 20 private property owners in the region are joining Stockton in the project and have begun the process of tapping trees.

The Stockton team tapped a few trees on campus in February, but this fall began a larger project of linking just under 100 red maple in a spiderweb of tubing that delivers sap to a central collection station. This week they began tapping the trees into the tubing system.

“We heard from some of our partners that they were beginning to collect sap,” said Assistant Professor of Environmental Science and lead investigate Aaron Stoler.

Sap develops during “freeze-thaw” weather, when temperatures go below freezing at night, then rise above freezing during the day, causing the sap to run down the trees.

It takes about 40 gallons of sap to make one gallon of syrup. Stockton will also be processing the sap into syrup.

When asked about the potential scale of a syrup industry in southern New Jersey, Stoler said that the region won’t ever compete with Vermont or other New England states. However, red maples are abundant in southern New Jersey and maple sugaring could develop as a cottage industry for property owners.

Research assistant Joseph Russell has been working with the private property owners, testing soil and providing the tapping equipment. The owners will collect data on their properties for the research.

If any property owners know that they have red maple trees and are interested in becoming a part of the project, please email

The project includes several Stockton faculty with expertise in forestry, soil science, economics, and biodiversity, as well as student volunteers.

More information on the project is at

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