Dasylirion is a genus of 17 species of grassy looking rosette plants in the family Ruscaceae, all native to northern Mexico, with three species also extending into the south-western United States. They are not grasses but are related to the Agaves. As they grow older, the bases of several species develop into a beautiful trunk. When the plants are mature they send out blooms with hundreds of greenish-white bell-shaped flowers on a tall narrow spike coming from the center of the plant. Unlike most Agaves they do not die after blooming. Most Dasylirion species are reasonably resistant to cold and drought.

Dasylirion glaucophyllum commonly known as Blue Leaved Dasylirion or Hidalgo Sotol is an attractive evergreen Yucca-like succulent with upright, toothed, superbly glaucous, blue leaves up to 1 meter long. They will reach a maximum plant height of 1.5 meter. Dasylirion glaucophyllum has a medium growth rate and requires well drained soil and full sun exposure. It is cold hardy to -12°C.