March at Rock Mill Park has Big Creek running full and loud, and the first real warmth of the year comes up out of the ground rather than down from the sky. Santos Landscaping opens the season right about then — beds cut in and mulched dark, shrubs pruned back, the first mow of the year, edges re-established after four months of neglecting themselves. Alpharetta yards look twice their size once those lines are redrawn. From there it is a long steady summer of mowing, trimming and cleanups until the leaves change the assignment entirely. Roswell, Johns Creek, Milton and Cumming stay on the same rotation.