With the summer season approaching, the Pembroke Watershed Association is inviting residents to help spruce up the town’s ponds. The nonprofit is organizing its annual pond cleanup, an event at which teams of volunteers remove trash and other debris along the perimeter of local ponds. This year’s cleanup is set for June 8 at Stetson, Little Sandy Bottom, and Furnace ponds, and June 8 and 9 at Oldham Pond. The hours are 10 a.m. to 2 p.m. Residents of all ages are needed, including boaters, canoeists, and shore walkers. Participants are asked to bring waders or old sneakers, and work gloves. For more information, go to www.pembrokewatershed.com.