Thank you, Hans, Paul and Joakim,
I'm pleased with how well this has done but I do hope it sets seed this year.
I collected the seed fresh in the UK in Autumn 1997, sowed it in Australia in our autumn the following year (I think) in a pot with grit on top, left open to the elements, but I was still in Melbourne then, so they would not have experienced a frost. I got 5 out of 5 to germinate but I only have the one plant left as I gave away 2 and lost the others.
I only got flowers for the first time in 2006 but the previous year the bud/s got frosted which is why it took so long I think. I suppose in a year with heavy frosts I'm likely to lose the flowers
Maybe it's doing well because of Global Warming?
cheers
fermi