I grew this in the Kansas City area of eastern Kansas which, during the time I grew it there, the plant experienced lows to -10 F. It seemed perfectly content there, flowering and setting seed. Aaron Floden eastern Tennessee On Wednesday, March 26, 2014 10:52 PM, Ina Crossley <klazina1@gmail.com> wrote: Will it grow where there is frost? A friend would like some seed in the South Island of NZ. Where they get snow and frost.