The Genus Yucca

Family: Asparagaceae

Yuccas are fantastic plants native from Canada, south through the southwestern United States, throughout Mexico, south to Guatamala. They are found in a wide range of habitats, from humid rainforest and wet subtropical ecosystems to the hot and dry (arid) deserts and savanna.

There are currently 51 species of Yucca, and there are about 14 species in Arizona.

Yuccas have a very specialized, mutualistic pollination system; being pollinated by yucca moths (family Prodoxidae); the insect transfers the pollen from the stamens of one plant to the stigma of another, and at the same time lays an egg in the flower; the moth larva then feeds on some of the developing seeds, always leaving enough seed to perpetuate the species. Certain species of the yucca moth have evolved antagonistic features against the plant. They do not assist in the plant's pollination efforts while continuing to lay their eggs in the plant for protection.

Yucca species are the host plants for the caterpillars of the yucca giant-skipper (Megathymus yuccae), ursine giant-skipper (Megathymus ursus), and Strecker's giant-skipper (Megathymus streckeri).

Photo of Datilillo Yucca (Yucca valida) by Mark Fishbein on iNaturalist

Yuccas are widely grown as ornamental plants in gardens. Many species also bear edible parts, including fruits, seeds, flowers, flowering stems, and (more rarely) roots. References to yucca root as food often arise from confusion with the similarly pronounced, but botanically unrelated, yuca, also called cassava or manioc (Manihot esculenta). Roots of soaptree yucca (Yucca elata) are high in saponins and are used as a shampoo in Native American rituals. Dried yucca leaves and trunk fibers have a low ignition temperature, making the plant desirable for use in starting fires via friction. The stem (when dried) that sports the flowers is often used in conjunction with a sturdy piece of cedar for fire-making. In rural Appalachian areas, species such as Yucca filamentosa are referred to as "meat hangers". With their sharp-spined tips, the tough, fibrous leaves were used to puncture meat and knotted to form a loop with which to hang meat for salt curing or in smokehouses. The fibers can be used to make domestic items or for manufacturing cordage, be it sewing-thread or rope.[citation needed] Yucca extract is also used as a foaming agent in some beverages such as root beer and soda. Yucca powder and sap are derived from the logs of the plant; such extracts can be produced by mechanical squeezing and subsequent evaporation of the sap, and are widely used in food, cosmetics, and pharmaceuticals

The flower petals are commonly eaten in Central America, but the plant's reproductive organs (the anthers and ovaries) are first removed because of their bitterness. The petals are blanched for 5 minutes, and then cooked a la mexicana (with tomato, onion, chili) or in tortitas con salsa (egg-battered patties with green or red sauce). In Guatemala, they are boiled and eaten with lemon juice.

In El Salvador, the tender tips of stems are eaten and known locally as cogollo de izote