Humphrey Woods keeps bur oaks old enough to have shaded wagon roads, and in late September the acorns come down like hail on the trails. Oak Forest Landscaping works the open ground around stands like that — mowing Orland yards, hand-trimming around trunks and fence posts, cutting a defined line where lawn meets bed. Turf under big trees is its own puzzle: shade, root competition, and a fall of leaves that will smother it if nobody moves them. So the leaves get moved, and the last cuts of the year go onto open turf. Come April the grass under those oaks comes back, and that never stops being satisfying.