Although no longer recognized by herbarium taxonomists, Yucca treculeana var. canaliculata is quite distinct from typical Yucca treculeana in its Sasquatch-like proportions. This giant is made up of stiff, 5' long, glaucous leaves (3.5' is typical) radiating out from the massive 1' thick trunk. This giant form hails from the Rio Grande region of south Texas, where it forms monster-sized clumps along the Texas-Mexico border. In the garden, our 7-year-old, deer-resistant clumps are 10' tall x 11' wide. Mature plants are topped with massive globes of white that open to reveal the white bell-shaped flowers...a hummingbird fiesta. If you need to stop trespassing deer...this is your plant!