More new agaves... you're on a roll. Can't help you on the ID question. Not sure that's an americana in the third pic, it looks sort of leafy compared to the ones around here. If it's a proper americana it will consume that entire area within a few years, especially if it gets regular water. Even if it doesn't. I planted one here that I don't water at all (6" rainfall this past year, with an 8 month-long drought), and it keeps on growing. A variegated americana can grow even bigger than the regular blue kind, which is already quite ample.
You can keep the Sharkskin on the dry side, and don't expect real fast growth there... my experience anyway. Here are three offsets I planted in the park a year and a half ago (biggest one was 3 gallon size upon release).
Thanks! I am questioning that "americana" one. It is so symmetrical and completely different than the one I already have. Mismarked does happen. Anyone know what it could be instead? The sharkskin is pretty in those pictures!
And, just great, I end up with another tender one. My poor poor attenuata bums me out. I must be more careful now I guess... I was very bad about winter. I failed to cover all the work we did last summer. :(
My 'Sharkskin' and x 'Sharkskin Shoes' are very slow growers, but the shoes puts out lots of pups. Thankfully they don't pup far from the parent; and take forever before they are large enough to be separated. xuling