Mine are 'Blue Glow', and I have five of them planted in outdoor beds. The two I reported on are on the north side of the house in an exposed location where many other C&S plants froze solid and died...
I took a few photos recently, but I don't have them with me at the moment, so I'll post them later when I get a chance.
Also killed by this same freeze were most of the numerous Queen Palms in town which die around 18-20 F, though we won't know until summer if any are still alive.
Lots of sago palms had their fronds badly burnt as well...
I'm surprised that 'Blue Flame' would be hardier as it retains so much of the attenuata look, and the other parent (shawii) is not very cold hardy, while 'Blue Glow' has a more cold tolerant parent in ocahui....
Agave ocahui not only takes all the cold here but also tolerates our wet winters and heavy clay soils with no problems, at least the one plant that I have had outdoors in the ground for some years now.
Peyton
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