Caldwell sits near where Essex reaches toward Passaic and Morris, the land falling away west through Fairfield and Roseland to the river flats. Tri-County Landscaping covers that ground with lawn care — mowing on a schedule, trimming what a mower cannot reach, edging drives and walks so the lines stay sharp. The soil changes as you head west toward the Passaic, and so does how fast a lawn wants cutting. Spring starts on the low ground here and works its way back up the slope. Following it around the map, yard by yard, is a fine way to spend a season.