i used a sod cutter to clear out an area for a flower bed. the depth i cut was 2.5inches. bermuda borders the area set aside for a flower bed. my fear is the bermuda will still grow into the bed. any thoughts on what can i do to keep this from happening? i just heard of "snapshot" but don't know enough about it. i got ahead of myself and planted some shrubs and day lillies. any help would be appreciated.