Help Protect
Maine Lakes

Invasive Plant Patrol

The Invasive Plant Patrol (IPP) program promotes prevention, early detection and rapid response at the local level by providing training, educational materials, resources and technical support to groups and individuals across the State of Maine. To date thousands of individuals (volunteers, state agency personnel, professionals, teachers, students and others) have participated in IPP workshops. IPP 101 Workshops teach participants how to recognize the invasive aquatic plants on Maine’s “eleven most unwanted” list, and to distinguish these invaders from their native Maine look-alikes. A variety of advanced training opportunities are also offered which cover advanced native plant identification, manual control methods for dealing with infestations, and other helpful and informative workshops. To learn more about the many different IPP workshops, visit our Training & Certification page.

IPPWorkshopInvasive Plant Patrol workshops are offered free of charge to participants, and made possible through the generous support of the Maine Department of Environmental Protection, the Maine Lake and River Protection Sticker program, foundation grants, businesses, lake and watershed groups, and individuals. Though anyone interested in learning about aquatic invaders is welcome to participate the workshops, we encourage those who wish to become active members of Maine’s early detection team to make a formal commitment to the statewide endeavor by becoming a Certified IPP Volunteer.

The goal of the IPP Certification Program is to encourage and support individual and group commitment to annual collection and submission of invasive aquatic plant screening survey data. To become a Certified Plant Patroller you must have participated in at least one IPP 101 Workshop (or equivalent training), complete the application and sign a statement of commitment. The Lake Stewards of Maine (LSM) provides all certified patrollers with standardized field sheets, an ID card and a bucket scope. View this overview of the IPP Certification requirements and benefits to learn how to become a Certified IPP, how to maintain an active IPP Certification, and how you and your lake will benefit!

List of lakes with Certified Invasive Plant Patrol Monitors

What You Should Know About Maine’s Invasive Plant Patrol

What You Should Know About IPP - PresentationA presentation by LSM’s Roberta Hill for use by Maine’s lake and watershed associations to spread awareness of invasive aquatic plants and volunteer opportunities to join in the effort to protect our lakes and ponds.

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The Invasive Plant Patrol workshops are made possible by boater participation in the Maine Lake and River Protection Sticker program.

Thank you for helping to keep Maine lakes free of invasive aquatic plants!


Contact information

Contact us at:     Phone: 207-783-7733       Email:

Hours of visitation at LSM Office:
  Mondays 9:00am - 3:00pm         Wednesdays 9:00am - 3:00pm
  Thursdays 11:00am - 3:00pm       Or by appointment

Our Mission

Lake Stewards of Maine (LSM) works to protect Maine lakes and to promote lake stewardship through widespread citizen participation in the gathering and dissemination of credible scientific information pertaining to lake health.


LSM is a non-profit 501(c)(3) organization committed to the collection of information pertaining to lake water quality. For 50 years, trained volunteers throughout Maine have donated their time so that we may all learn more about one of Maine’s most beautiful and important resources — our lakes.