I had one geum survive two years down here but it didn't come back this year. My daughter has plenty so when I get a whim to grow it, I just get some of her volunteers, otherwise I'd be finished with them too.
I found a knautia today in a very weeding flower bed that I had even forgotten that I planted. It was in bloom but when I pulled some weeds by it to take picture, I broke the bloom off.
