Jefferson Valley carries its hills lightly: oak ridges, gray rock outcrops, roads that bend around the water on their way through Yorktown. Rene's Landscaping Inc. keeps the lawns along those bends cut to an even nap, week in and week out through the growing season. Shade is the puzzle here, since grass under old oaks asks for a different touch than a front yard catching full afternoon sun. Cleanups in spring clear what winter dropped, and the fall work runs long, because these trees do not give up their leaves quickly. The payoff is a yard that looks composed, edges crisp, beds clear, nothing out of place.