Not!
This beauty is the flowering stalk of Agave Gracillipes, Guadalupe Mountains century plant. Although native to Texas and New Mexico, this specimen is growing - quite happily! - in one of the rock gardens at Timberline Gardens in Arvada (Denver metro), Colorado.
Timberline Gardens carries several varieties of agave, including the two that I profiled in an earlier post here.
These beautiful, sculptural plants are wonderful assets to the garden, as long as you can provide them with the right growing conditions: sun, heat, and dry soil (especially in the winter).
