Puya

I purchased what I thought was Puya alpestris "Sapphire Tower" from Annie's Annuals, but I think it's really Puya mirabilis. I bought two of them, and a couple summers ago one of them bloomed, this year the other one bloomed on two stalks, the blooms are really cool, but each one only lasts a day.

It's bromiliad from South America. Puya mirabilis
Zone 8b to 10—
A fast growing terrestrial bromeliad with bright shiny-green leaves that are slightly prickly at their base. The large, nodding flowers resemble species gladiolus and are chartreuse. This species flowers in 3 to 4 years from seed, very quick for a Puya.
Native to South America.
Average
Partial Sun
Attracts Hummingbirds
Great for Containers
Grows to 2' x 3'.