March in east Multnomah County means Kelly Creek running full and clay ground that holds the shape of every footprint. That is the season Blue Springs Lawn & Construction likes for the heavier work: regrading the low spot that drowns each winter, putting in new lawn where bare dirt has taken over, resetting the border between grass and bed so the line finally reads clean. From there it settles into the ordinary and necessary — mowing, trimming, weed control and cleanups through the long green stretch from April to November. A yard built right in spring is a far easier yard to care for in August. Both halves of that sentence are the work.