Pale-leaf yucca

Description

Yucca pallida, sometimes called pale yucca, is a species of yucca native to Northern Mexico and parts of the blackland prairies of northern and central Texas, and notable for its light-colored leaves that range from a pale blue-gray to sage-green in color. The rosettes average 20–50 cm tall and 30–80 cm in diameter, with leaves 15–40 cm long and 2–3 cm wide, being widest around the midpoint. The rosettes sit directly on the ground, with little or no trunk. The leaves have a yellow to brown terminal spine, and are generally flat, possibly with some waviness or rolling along the edges. The inflorescence is a panicle, 1–2.5 m tall, with up to 100 bell-shaped flowers, each 5–7 cm long, with color ranging from light green to cream. Yucca pallida is known to hybridize with Yucca rupicola Scheele, which has a similar appearance, but whose leaves are more twisted and curved. Although not common in horticulture, its color, size, and moderate hardiness (down to −18 °C or 0 °F) make it a good gardening alternative to other species of yuccas. Yucca is a genus of perennial shrubs and trees in the family Asparagaceae, subfamily Agavoideae. Its 40–50 species are notable for their rosettes of evergreen, tough, sword-shaped leaves and large terminal panicles of white or whitish flowers. They are native to the hot and dry (arid) parts of the Americas and the Caribbean. Early reports of the species were confused with the cassava (Manihot esculenta). Consequently, Linnaeus mistakenly derived the generic name from the Taíno word for the latter, yuca. The Aztecs living in Mexico since before the Spanish arrival, in Nahuatl, call the local yucca species (Yucca gigantea) iczotl, which gave the Spanish izote. Izote is also used for Yucca filifera. The natural distribution range of the genus Yucca (49 species and 24 subspecies) covers a vast area of the Americas. The genus is represented throughout Mexico and extends into Guatemala (Yucca guatemalensis). It also extends to the north through Baja California in the west, northwards into the southwestern United States, through the drier central states as far north as southern Alberta in Canada (Yucca glauca ssp. albertana). Yucca is also native northward to the coastal lowlands and dry beach scrub of the coastal areas of the southeastern United States, along the Gulf of Mexico and South Atlantic States from coastal Texas to Maryland. Yuccas have adapted to an equally vast range of climatic and ecological conditions.