Summer is short and generous in Hopkinton — light holding past nine, the West Branch of the St. Regis running cold under the bridges, everything green making the most of a season it knows is brief. Adirondack Greenhouses LLC mows into those long northern evenings, trimming close, edging the walks, keeping beds planted and tended while the window is open. Cleanups bracket it all: the spring rake-out once the snowbanks finally give up, and a last pass before the ground closes again. This far north a well-kept lawn is a kind of optimism, laid down in a few bright months and admired all winter. That is reason enough to make every cut count.