Dawn in Deerfield: the first inbound train pulls out and the sound of it travels over yards still silver with dew. H Rodriquez Landscaping Inc. is already loading, because spring here is mulch season — beds edged by hand and dressed dark so the hostas and the yews come forward. Then the long green stretch of the year, mowing week after week, trimming close, walks blown down, feeding turf that has to share its ground with hundred-year oaks. Lawns in West Deerfield Township are shaped by shade and by the river running along the west of it, and both ask for a lighter hand. Done right, a yard looks like nobody worked on it at all.