Shaping the future of maple
Established in 1946 as the first permanent maple research facility in the world, PMRC is renowned as an international leader in basic and applied research on maple trees and maple production.
Sap pricing calculator (MS Excel) UVM Extension Maple Program Northeast SARE funded researchFacilities
Our property consists of approximately 200 acres of wooded and open land. More than 100 acres are sugarbush actively managed for maple syrup production and research.
In the Maple Production Research Facility, built in 2006, we conduct experiments on up to four evaporators simultaneously, each fed by a common sap source. With this set-up we have studied air injectors, pre-heaters, steam-away units, reverse osmosis, and other maple innovations.
The Sumner Hill Williams Sugarhouse was designed and built in 1993 by sugaring operations manager Sumner Williams, with the assistance of Proctor staff, volunteers, and numerous donations of materials and services. It now houses a Lapierre HyperBrix Reverse Osmosis machine and evaporator, which helped to double operational productivity in 2018.
The main laboratory building contains research facilities, offices, a kitchen, and a conference room for up to 75 people equipped for presentations and workshops. The conference room is available to UVM and other organizations for classroom teaching, meetings, and retreats.
Using PMRC Lands and Facilities
A UVM FieldLabs use approval form is required before conducting research and educational activities at Proctor Maple Research Center. Please submit a use approval form with a description of your planned activities. It is our goal to provide a prompt response with either approval or a request for clarification within 1-3 business days. For questions, contact PMRC Outreach Professional, Phoebe Plank, at Phoebe.Plank@uvm.edu and FieldLabs Coordinator, Lori Anderson, at Lori.Anderson@uvm.edu.
Upcoming Events
PAST EVENT - 11/21/2025 Open House: UVM Extension Maple Syrup Quality Testing Lab
Proctor Maple Research Center Staff
Director of Scientific Research, Proctor Maple Research Center • Assistant Professor
Proctor Maple Research Center Outreach Professional
UVM Collaborators
UVM Extension Maple Specialist
Maple Quality Specialist
Extension Associate Professor • Farm Business Management Specialist
Assistant Director, Field Naturalist Program • Exhibits & Outreach Coordinator, Natural History Collections
Research Students
Graduate Student, Department of Plant Biology
Graduate Student, Department of Plant Biology
Graduate Student, Field Naturalist Program • Cohort AO, Class of 2026
Graduate Student, Field Naturalist Program • Cohort AO, Class of 2026
Watch
Check out our YouTube channel for videos on maple tree research and maple syrup production.
Watch Across the Fence's "Researching the Sweet Stuff" to learn more about how PMRC studies and celebrates maple.
Listen
Tune in to Vermont Maple Minute, a podcast hosted by UVM Extension Maple Specialist Mark Isselhardt.
Visit
We are currently restructuring our tour schedule. Please check back for updates or email PMRC Outreach Professional, Phoebe Plank, at Phoebe.Plank@uvm.edu for more information.
Unfortunately, we are too busy to schedule visits during sugaring season (late February to mid-April).
Contact
UVM Proctor Maple Research Center
364 Marvin Taylor Road
Underhill, VT 05489
Hours: Monday-Friday, 9:00 AM-5:00 PM
Phone: (802) 899-4923
Email: pmrc@uvm.edu
Read
Proctor Maple in the News:
UVM Extension's Mark Isselhardt's 07/2024 article in The Guardian
How Climate Change is Impacting the Maple Syrup Industry
Regional Maple News:
UVM Maple Resources: