Down at Grills the Wood River meets the Pawcatuck, and the whole bottomland turns green weeks ahead of the higher ground behind it. Lawn Warrior & Son takes the season from there: the first cut of April, the weekly mow through the heat, string trimming along wall lines and around every post and pole in the yard. River-bottom soil holds its moisture and grows fast, so schedules are kept even when the weather argues, and the deck comes up off the ground through a dry August. Fall cleanups run late in this part of Hopkinton, since the oaks let go long after the maples have finished, and the lawns go into winter clear. What lasts is the look of a lawn cut straight and closed off neatly at every border.