An August thunderhead builds over the prairie southwest of Sandwich and you can watch it come for an hour before it means anything at all. Zack's Landscaping tries to beat it: last yard of the day mowed, trimmed and edged, the drive blown off while the light goes strange and green. Autumn brings the other kind of hurry, cleanups and leaves and everything squared away before the cold. Mowing, trimming, edging, cleanup, done at whatever pace the sky allows that week. When the rain finally lands on a finished lawn, the whole thing looks like it was meant to happen that way.