The town takes its name from the great burr oaks that stood on this prairie before the plows came, and their descendants still throw shade over half the lawns in the village. Perry Lawn Care works beneath them from the first warm week onward, mowing, trimming and edging on a steady weekly turn. Grass under old trees is its own puzzle, thin here and lush there, and it takes a practiced eye to leave it looking even. Early mornings are the best of it, before the heat sits down on the flat country and while the dew still shows where the wheels have been. What gets left behind is a lawn with clean lines and nothing spilled onto the sidewalk.