|Do turtlehead flowers (Chelone lyonii) need to be cut back in the fall when the frost comes?
|Turtlehead develops flowers from the previous year's stems so if you cut yours back in the fall, they won't flower for you next year. I'd leave the plants alone for now. In the early spring you can prune back any winter damage while still retaining some of the older wood. Your turtlehead should perform nicely for you. Enjoy!