Amesbury sits close enough to the coast that the marsh wind finds it, salt-edged in July and knife-edged in January. Both halves of that year get the same attention at Willow Creek Land Design LLC. Mowing, trimming, edging and seasonal cleanups carry the growing months; plowing, shoveling and sanding take over when the wind changes character. Snow that comes off the water is heavy, and it drifts across open ground until a drive fills in behind you. Grass on this side of the county is tough and salt-brushed and rewards unhurried care. Standing on a finished property at dusk, everything cut or cleared and the light going purple over the marsh — that is the part worth showing up for.