Blairs wrote:As in 9cm pots I would place them in the greenhouse. Do keep an eye on them and keep them watered and check for mould. I would put outside in April/May. Mine are outside all the time covered with their old leaves but they are older. Buy chicken pellets and use a handful when planting your gunnera=works a treat!
A word of caution with chicken pellets ,I lost three fair sized gunnera for no apparent reason,the only common factor was chicken pellets that I used to use.This is just my own experience ,something to bear in mind,the plants were not small ,all over 10 years old.