Mount Adam and Mount Eve stand over Florida like two low bookends, and on a summer afternoon you can watch a thunderhead build behind them and time the mowing to it. Yards here sit between those hills and the Wallkill's flat farm country, some sloped and stony, some soft as a garden bed. Mowing, trimming and edging on ground like that means paying attention, since one property drains in an hour and the next holds water all week. The season opens with a full clearing of whatever winter piled into the beds and the corners, and closes with the leaves hauled off the grass. A lawn that stays even and unhurried from April to November is the entire ambition.