Line up the wheels of one side of the lawn mower with the edge of the flower bed. If you have a side-discharge lawn mower, position the wheels opposite the discharge alongside the flower bed. If you have a mower with a bag, position it to either side.
Mow the grass in a straight line along the length of the flower bed. Continue mowing until you have completed one complete pass around the flowers.
Repeat the process in the opposite direction, mowing around the perimeter of the flowers once again while overlapping the original cut path by one-eighth the width of the mower. Continue the back-and-forth mowing pattern until the lawn mowing is complete.