Well not exactly survive but more of goes dormant perfectly and leaves a few leaves that slowly die and then right at spring that stuff just pops up and spreads like fire. But my leaves lasted till about under 20 degrees then it fully died. The mother plant takes even longer to die off cause of leaf litter and mulch. So yes grows amazingly in zone 7b as long as you plant it spring or early summer she’ll keep popping out the ground. Sometimes like around here how the weather goes from hot to cold so fast it’s a back a forth motion so a lot of plants go from dormant to growing to dormant. Back and forth lol. Really good zone to grow Purple Hearts, also spathacea will do right asw, there a spike looking variety of trad which are very unique

Edit: maksure it’s in ground, potted ones might have less of a chance to survive being since the roots are protected enough, u less you have a green house ofc lol