Nice article Lynn with great information. I've been trying to add some of these amazing plants to my sempervivum and sedum gardens and containers the last few years too. The fact that so many of them remain small it a plus due to space limitations. I love the color of the Gentiana! I grew Leontopodium for a long time but lost it 2 winters ago. I have to try it again, my Dad loved it.
Thanks for a great article.