Do you cut hosta back in the fall?
Certified GKH Gardening Expert
Generally, you will want to keep all dead growth off of the plant. You can prune those leaves at any time. the flowers can be cut to promote leaf growth, or you can leave them on until they are dead.
At the end of the season in late fall or winter, you may cut back all of the leaves. In fact, this will help the plant out some, too!
Here is an article with more information:https://www.gardeningknowhow.com/ornamental/foliage/hosta/cutting-back-hosta-plants.htm