Wondering if you can split and re-plant parts of purple fountain grass.
If You Can Split and Re-Plant Parts of Purple Fountain Grass
Certified GKH Gardening Expert
Yes, this can be done, though it's probably better to do so in spring. However, in your area it may be ok to split them at the end of summer or early fall as well and replant elsewhere. Depending on your winters, a layer of mulch will help keep the newly planted fountain grass warm and protected.