Here at Lotusland we have Puya alpestris which our visitors are stunned at the flower color - that is when it flowers. Also at Lotusland in Santa Barbara we had a Puya chilensis flower for the second tome in 30 years in 2015. Referred to there as the sheep killer because they can get entangled in the thorns and die. I guess the plant then uses it as fertilizer. We saw numerous ones in flower near Maitencillo last year. Looks like a giant bouquet of daffodils on top of the stalk, Both of these species are not for the feint of heart to care for and can get fairly large. Jim Santa Barbara