In early June the cottonwoods along the Flint River turn their seed loose, and the west edge of Flushing looks like it is snowing in the middle of summer. 4A Landscaping keeps mowing straight through it, steady passes across the open ground, corners trimmed where the mower cannot reach. The edge along a walk gets cut until the line is honest, and the clippings leave with the truck instead of drying in gray rows on the turf. That is the difference between a lawn that has been shortened and a lawn that has been finished. 4A Landscaping works Flushing and the Genesee County towns around it.