I grew these from seed obtained from VanDusen Botanical gardens. Planted in a very free draining quite poor soil, they survived our extremely cold winter 2010/11 in the UK. I have not found them to be invasive here, nor have they yet managed to seed around. The plants have slowly increased, they take little space and are attractive to bees as well as a social wasp I see on them every year. Ideally I would like them to bulk up a little more but they are alive! A group planting would be a good idea.

Leaves are mostly basal with a flower stem rising from them, there's usually a few smaller leaves on the flower stem. The leaves look like a thisle leaf, are prickly and grey-green

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