Does the Bloodgrass plant need to be cut back or left alone?
Blood Grass Care in Winter
Certified GKH Gardening Expert
It can be left alone, but I would recommend waiting to cut back until it starts to come back. This will give you the best results. Here is an article on the care of this: https://www.gardeningknowhow.com/ornamental/foliage/japanese-blood-grass/care-of-japanese-blood-grass.htm