On Sun, 13 May 2018 18:16:09 +0100, Bob Hobden
wrote:


Some years ago I bought a number at the RHS Wisley Flower Show, not one
survived the first winter which wasn't a bad one. Never tried again
with hardy ones yet a couple of "tender" ones survived last winter OK.

Need to be planted very deep, half the bottom folige, buried is not
too deep.

I have had a tender one in the gaden now for over ten years, but
heavily mulched every year