The Messier Bits: The No-Mow Lawn is chopped downThe no-mow lawn is simply unmown grass…. no bulbs or wildflowers, but still beautiful. Also fun to do and loved by visiting kids and dogs. We stop mowing in September, let the grass flower, then cut it down with the first autumn rain. By May you would never know it had been there. In early summer. Seed heads just beginning in the foreground. View back to the house. Cutting down in autumn. Early autumn By April you can't tell it was ever there.