Late on a July evening, the light along Landing Avenue goes soft and the heat finally lets go of the day. Giuliano's Landscaping & Design Corp. often finishes there, walking a finished lawn one last time to catch the strip along the fence that a mower cannot quite reach. The season's work is mowing, trimming, edging and the cleanups that bookend spring and fall, done on a rotation homeowners can set a watch by. Design shows in the details — beds with a defined edge, turf that runs true to the lines of the house. Properties across Smithtown and out toward Kings Park get the same finish.