I love Agave attentuata; they're such a tough and sculptural plant; a real feature plant, I think. I wonder why you can't grow them outdoors. Is it because they can become quite unruly?
No, it's just that our weather is to cold and wet for them. It's the wet as much as the cold.
Es bellísima, me encanta el color que tiene y se ve elegante como dices tu.Un abrazo.
How fast do they grow?