Certified GKH Gardening Expert
In zones 5-9, fountain grass is considered perennial. If you live outside these zones, you can dig it up and overwinter the plant by placing in a container and moving to a cool (not cold), dry and dark location. Many people use garages, basements or even closets. Let the plant die back. Water once a month and bring out when you either see new growth or the temps outside average about 50 F. It will grow back after that.