The cold got my one that gets hit with morning sun.but the other 3 were fine.in better locations.It will return.mines even sprouting again& will be covered next time.I cut the leaves off leaveing 2 inches of stem pokeing up.I'm a
zone 8b Tyler county.the others#1 is under an eve#2 is under a
tree but its leaves are off& 2 leaves are broke from the puppy#3 is on screened porch was blanketed.I store my sheets on
plants some nights and keep folded on chair on porch with them.
also some of us texans got rain before the cold so we didn't have to water to preserve our roots.If you water them well.it takes longer to damage roots and we don't stay cold long enough,but that waters a plus.
good luck.mine was fine last year.then this
spring I divided him.shared him& spread him out some more.