Asclepias nyctaginifolia, commonly known as Mojave Milkweed, is a perennial herb that is evergreen or semi-deciduous, depending on water availability. It is native to desert washes, dry slopes, and scrublands in the Southwestern United States and Mexico, particularly in the Mojave and Sonoran Deserts. This species typically grows up to half a meter in height, with a tendency to bend or droop. Its thick, oval to lance-shaped leaves are arranged in opposite pairs along the stem and are slightly hairy, which helps reduce water loss. The inflorescence is a dense umbel up to 8 centimeters wide, with pink-tinted pale green flowers that attract pollinators, particularly butterflies, including the endangered Monarch butterfly. The fruit is a large follicle up to 9 centimeters long, containing seeds with silky tufts that are dispersed by the wind.

Mojave Milkweed is valued for its drought tolerance and its role as a host plant for Monarch butterflies, making it an excellent choice for xeriscaping and wildlife gardens. It thrives in full sun, requiring minimal water once established, and prefers well-drained soils. While it is not commonly used in traditional garden settings, its ecological importance and low maintenance make it a beneficial addition to naturalized areas and desert landscapes. It is rarely affected by diseases, but gardeners should be aware that it may not be as ornamental as other milkweed species.CC BY-SA 4.0