By Peterg
United Kingdom 
How do I split my Gunnera
10 Oct, 2012
Answers
Agree with Andy, but I would leave splitting it till April/May though.
10 Oct, 2012
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if i get any "arms" or bits that branch off, i just slice them off with a spade making sure there's plenty of roots on the bit to be severed.
Done loads and they all took...just make sure they're kept moist/wet.
10 Oct, 2012