Not totally hardy no, but it's survived for several years in Sheffield Botanical Gardens. So it may be a case of protecting it from winter wet rather than freezing temperatures. The one in the gardens is in the Mediterranean climate beds which are very gravelly & well drained.
Clay soil - Cheshire/Derbyshire border. I play with plants and soil and sometimes it's successful
One of the plants in Sheffield Botanical Gardens still flowering today after last weeks snow & freeze. But probably a different variety than the one shown by the OP.
Clay soil - Cheshire/Derbyshire border. I play with plants and soil and sometimes it's successful
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When you don't even know who's in the team
S.Yorkshire/Derbyshire border
I play with plants and soil and sometimes it's successful
When you don't even know who's in the team
S.Yorkshire/Derbyshire border
It is growing in a front garden in the area where I live and good size so must be couple of years old.
If I find it to buy, I will take chance with hardiness and see how it goes. The main problem for me is to find a sunny spot in garden.
I play with plants and soil and sometimes it's successful
I play with plants and soil and sometimes it's successful