By late July the Presumpscot runs low and warm past Riverton, and the lawns above it need a steady hand more than a heavy one. Grants Landscaping LLC keeps to lawn work — mowing on a regular cut, trimming around fences, posts and foundations, edging the walks, and clearing leaves and debris when the season winds down. Portland grass sprints through a wet June and sulks in an August dry spell, so timing matters as much as equipment. There's real pride in pulling away from a yard that looks like somebody paid attention to it. Service covers Portland and nearby Westbrook, Falmouth, South Portland and Scarborough.