;Native to the states of Sonora and Sinaloa, Mexico, Agave vilmoriniana is a spineless, toothless Agave to 3 feet tall and 5 feet around. A very popular landscape plant in Tucson, you see them everywhere. I'm sure part of their popularity derives from their less than lethal growth habit. On mature plants up to 15 years old a giant yellow flowered stalk develops, up to 25 feet high. Like other Agaves they die after flowering, but produce so many pups, especially on the flower stalk, that a huge patch of them can develop after several decades.
     I'll plant some of these when they get big enough and trade some others. Click below for more pictures.

Flowering specimen at a park in Tucson

Closeup of the flowers on the same stalk

Weird flower stalk at Tucson Botanical Gardens

A nice sized one at Boyce Thompson Arboretum