Early spring on the west edge of Lawrence, the tide slides up into the marsh grass at Bannisters Bay while the lawns above it start showing green at the crowns. Santo Artusa Landscape Inc opens the season out there — spring cleanup, dethatching the winter matting out, seeding, feeding, then a first cut set high. Yards on the bay side sit low and hold water, so timing matters more than effort. By the time weekly mowing, trimming, edging and mulching hit their stride in May, the ground has already been set up to carry them. Watching a lawn come all the way back is a good reason to keep doing this.