Bigelow's Beargrass.
Nolina bigelovii, Beargrass Family ( Nolinaceae ), Bigelow's Beargrass. Also called: Desert Nolina, Bigelow Beargrass, Bigelow Nolina, Bigelow's Bear-Grass, Bigelow's Nolina, Palmilla De Culebra, Desert Tree - Beargrass.

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Originally included within the Agavaceae family, all of the four genera Beaucarnea, Calibanus, Dasylirion, and Nolina are now into their own monocotyledonous family the Nolinaceae.

Nolina bigelovii is found in southeastern California through southwest Arizona into southern Nevada and into Sonoran Mexico and Baja California.

Bigelow's Bear-Grass develops a stalk up to 10 feet tall. It has leaf margins that are smooth to rough and could be filamentous. Normally it is found at an altitude of about 6,000 feet.

Quick Notes:

Height: 4 to 5 feet, but can be 8 feet tall with up to a spread of 6 feet.

Flowers: Its tiny 1/8" long flowers are greenish - white on a terminal stalk. The stalks upper half or two-thirds is branched.

Flowering Time: Phoenix Arizona, June to July.

Leaves: Dark green firm leaves, leathery and rough-margined. Evergreen. narrow, to 4- 1/2 feet long and 3/4" wide, in a dense basal cluster.

Found: Native of the Sonoran desert in Mexico; (Sonora, Northern Baja California, & Chihuahua). Discovered near Hermosillo, Sonora, Mexico. Also native to southeastern California, western Arizona, southern Nevada below 3,500 feet elevation.

Hardiness:
USDA Zone 9a: to -6.6 �C (20 �F)
USDA Zone 9b: to -3.8 �C (25 �F)
USDA Zone 10a: to -1.1 �C (30 �F)
USDA Zone 10b: to 1.7 �C (35 �F)
USDA Zone 11: above 4.5 �C (40 �F)

Soil pH requirements:
7.6 to 7.8 (mildly alkaline)
7.9 to 8.5 (alkaline)

Sun Exposure:
Full Sun

Elevation: 0 - 6,000 feet in Arizona.

Habitat: It grows well on dry slopes and rocky ridges and in creosote bush scrub.

Miscellaneous: Photos Taken: Arizona-Sonora Desert Museum. April 19, 2008. Maintenance: Low. Cold hardy to about 25 �F and drought resistant.