The South Branch of the Raritan begins as almost nothing up here, a thread of water working south out of the Flanders lowland toward much bigger country. Green Castle Landscaping & Lawn Care LLC keeps to the ground it drains — weekly mowing, edging along walks and drives, mulch turned into the beds each spring, and cleanups at both ends of the year. Lawns near the water hold their moisture late into the morning and grow with real enthusiasm, which makes a set schedule matter more here than in drier places. Fertilizing and weed control are timed to the season rather than to the calendar. By midsummer the color runs all the way to the tree line and the property reads as one continuous piece.