April on Dunemere Lane, the beeches still bare and the daffodils out anyway, the whole yard about to happen at once. Janet Landscape Design works East Hampton gardens at that hinge of the year, with spring cleanups, beds opened, the first mow, and the edges drawn back into shape. From there it is weekly cutting and trimming right through the green months, plantings kept in proportion to the space they live in. There is a plan underneath a well-tended yard, even when the whole thing reads as effortless. By midsummer nothing looks designed at all, and that is the compliment.