Look for Info on “Step 1” to control Japanese Knotweed in the June 2026 edition of the Newsletter!

It’s easiest to tackle invasive plants on your property when you first notice them. If you have Knotweed and haven’t cut it yet (that’s Step 1), do so ASAP and before if flowers! It’s best to use hand tools or blade cutters. DO NOT mow, brush hog, or string-trim, as that will spread pieces of the plant that can root and grow. After cutting, either spread the plants on plastic in the sun to dry out, or bag them in heavy-duty (7 mil) bags.
Second step: Decide whether to smother the Knotweed or use herbicides. You can take the second step now or let the plants regrow to weaken the rhizomes. If you let it resprout, do your final cut before the second growth sets its seeds.

After either cutting, proceed to smothering the plants or treating with herbicide (only on your own property). If smothering, mulch the area several feet beyond the perimeter of the plants, cover with heavy plastic, secure the edges and weight the top of the plastic. The goal is to ensure light cannot reach the plants and nothing can penetrate the plastic cover from above or below. If choosing herbicide, follow state laws and Best Management Practices. If the knotweed is not on your own property, a NH licensed herbicide applicator is required to use herbicide. 
Use the QR codes to read the following guides from the NH Dep. Of Agriculture. Carefully follow all steps.
~ Kelly Short, Conservation Commission

The Conservation Commission has been working hard to battle other invasive plants — most notably bittersweet — on conservation properties around Town. Watch for upcoming workdays that will be scheduled in the fall. All are welcome to join them prune, pull, and saw!