Many species tend to be much more cold hardy than one would expect. They grow in high desert altitudes that get pretty darn cold in winter - well below freezing. The problem is too much winter wet.......if you can avoid that (containers, planting on a slope, very well drained soils), then you have a good chance with A. parryi var. parryi, montana, havardiana or utahensis. Attached is a discussion of agave hardiness from the Cacti and succulents forum. There are some additional links there you can research. Here is a link that might be useful: hardy agaves

Wow, you made out like a bandit! Karol's plants do very well here and you got some great ones. I have a few of those and love the clear colors on all of them, plus their vigorous plant habits. FEAR NOT was new last year, and has already made a small clump this year. So you should be even happier a year from now!

Very nice. Karols plants are great and I don't think they can ever dissapoint. Mine are not quite ready to bloom yet. I try to get as many people to try our northern hybridizers as I can. Especially when the flowers are as beautiful as Karols intros are!

Looks like the flowers were opening well in spite of the cold weather. That is a really impressive greenhouse in the second picture. My favorite daylily is the next to last one. Thanks for showing us a glimpse of the gardens. Val