agave webberii is produced in the nursery trade for the southwestern US market.
I doubt you'll have any success tryin to grow it outside if you live north of Dallas. Needs a sandy dry soil as well. Not sure what one would do as an interior plant, but full afternoon sun would be essential.....if you can't locate one, send me a PM and I can dig up a small pup in my yard and mail it to you....just don't tell the Oklahoma Dept of Agriculture about it
