By late afternoon the brick downtown holds the whole day's heat, and the crape myrtles put their color up against storefronts a railroad built. Bill Kennedy Landscape tends the grass around all of that, on the streets that climb the ridge above the Red River, where a lot can run flat in front and drop away hard in back. Slope changes everything about a mow: which way the deck travels, where the trimmer has to finish by hand. The aim is a lawn that reads as one green surface, with every bed line and mailbox post cut clean around. Denison and the towns near it get that same rhythm, week after week.