On August 18, 2025, part of Lake Arrowhead will be
treated with herbicide to control the growth of Variable
water-milfoil (Myriophyllum heterophyllum), an invasive
aquatic plant
Herbicide Applied: florpyrauxifen-benzyl (Trade name: ProcellaCORTM EC)
Certified Applicator: SOLitude Lake Management®
590 Lake Street, Shrewsbury, MA 01545, tel. (866) 480-1271
The following water use restrictions on the ProcellaCORTM EC label apply
to the treatment area:
- Do not use lake water for hydroponic, greenhouse or nursery irrigation before contacting Maine Department of Environmental Protection (DEP, see contact information below) to confirm the herbicide has dissipated
- Do not use lake water for any residential or non-agricultural irrigation (such as shoreline property use for irrigation of residential landscape plants and homeowner gardens, golf course irrigation, and non-residential property irrigation around business or industrial properties) for 3 days following treatment. Turf may be irrigated immediately after the treatment
There is no label restriction on recreational uses, including swimming, but Maine DEP advises against swimming and boating in the treatment area on August 18, 2025 as an added safety precaution.
A map showing areas to be treated will be posted online at this website https://www.maine.gov/dep/water/invasives/.
FOR FURTHER INFORMATION CONTACT:
John McPhedran, Biologist
Maine Department of Environmental Protection
(207) 215-9863; john.mcphedran@maine.gov