Saturday morning on Lynn Common: the bandstand empty, the big trees throwing long shade across the grass, somebody's radio going two blocks over. Castro's Landscaping & Construction LLC runs its mowing routes through mornings like that one, cutting, trimming and edging along walks and driveway aprons. Grass grows fast in a coastal summer, and staying ahead of it is steady, unglamorous, satisfying work. Cleanups handle the rest, leaves gathered and beds tidied back to a line. The neighborhoods around the Common wear the result well.