I have Muhlenbergia in my yard, planted a year ago. Love it! Should I cut it back before spring?
Certified GKH Gardening Expert
There is usually no need to prune this grass except to keep it neat. If this is the case, you can cut it back in the fall to keep it neat through the winter, or in late winter before new growth comes out. I would opt for late winter. Here is more info: https://www.gardeningknowhow.com/ornamental/foliage/muhly-grass/growing-muhly-grass.htm