I was given a pot of seedling plants with this label 2 seasons ago. Last year I was surprised they hit the roof with their leaf tips ~2' but no flowers. This winter they have substantial leaves up to 3'long and where the leaf bundle emerges from the soil it is over 1" diameter. Unrolled the leaves would be an inch or more wide. I know I will need to cut the pot off next summer as they are tight in it, but the questions are, what is it, and what is the lowest temp. it will stand, as my frost free space is limited? Brian Whyer. Buckinghamshire, England, lowest temp so far this autumn -6C in the open garden.