Nolina interrata

Nolina is a relatively small genus of monocots from the southern U.S. and Mexico. It is the type genus of the family Nolinaceae, which contains only three other genera: Beaucarnea, Calibanus, and Dasylirion. All four genera in the family are found in Mexico, with Nolina and Dasylirion extending northward into the southern U.S., and Beaucarnea extending southward into Central America. In the past, members of this family were included in the agave family, but they are a distinct group and are best kept together in their own family. While some nolinas develop a trunk in time and grow to be small trees, others resemble clumps of coarse grass and are sometimes referred to as “Beargrass”. Nolina interrata is in a sense a compromise, since it has a woody stem, but usually this is buried in the ground. It is notable for its attractive arching glaucous-blue leaves, about a half-inch to an inch wide (1.25 to 2.5 cm) and 2½ to 4 feet long (up to 1.25 m). Like all members of the Nolinaceae, N. interrata has separate male and female plants, identical except when in flower. In either case, the branched inflorescence reaches a height of up to 7 feet (over 2 m), with many tiny white flowers arrayed along the branches. The fruit is a papery capsule with 3 chambers, bearing roundish seeds of a red-brown to tannish-yellow color. N. interrata is considered an endangered species in California, with only 2 small populations in San Diego County. While there are 3 additional populations in Baja California, this is definitely a rare and localized plant. Our specimens at the Ruth Bancroft Garden were distributed by another botanical garden after being rescued from the development that has been encroaching on its remaining habitat.

A VERY RARE plant with only a few populations found in San Diego County through Northern Baja, Nolina interrata is on the CNPS list of rare & endangered plants. A real knockout with pale blue strap-like leaves, it glows among other plants. Our plants are a mix of male & female plants, but both bloom with 5’ flower stalks of creamy flowers. The female plants will continue to be ornamental as they develop rusty-red papery seeds that look great with the blue foliage. We can’t tell which are female until they bloom so get a couple to increase your chances if you are set on seed. Found growing in chaparral, this Nolina will like well-drained soil & can deal with drought just fine. The seed for these plants was generously shared by the great folks at the Ruth Bancroft Garden in Walnut Creek, CA. Growing to around 3’ tall & 4’ wide.