Yucca rigida

Bold textured relative of the stunningly gorgeous Yucca rostrata, spending its very long youth as a 2 to 3 ft rosette of 1" wide, silver-blue leaves, eventually forming trunks to 5 to even 8 ft with small candelabras of white flowers in summer at maturity. This species from northern Mexico requires full sun to dappled shade in the most deserty areas and a touch of additional water in the driest spots. Not particular about soil as long as its not sitting in water. Our plants are putting on about 6" of trunk each season. Frost hardy in warm USDA zone 7. 

Agavaceae