Astragalus trichopodus var. lonchus, commonly known as Santa Barbara Milkvetch, Slender Rattleweed, Ocean Milkvetch, Southern California Milk-Vetch, or Long-Spined Milkvetch, is a perennial herb native to California’s coastal sage scrub and chaparral, extending to the edges of woodlands. It typically grows at a moderate rate to a height and width of 1-2 feet (0.3-0.6 meters). This species is characterized by its pinnately compound leaves and inflorescences of white to yellow pea-like flowers that bloom in the spring and are moderately showy. The plant’s appearance is further enhanced by its green, upright stems and fine-textured foliage.

Santa Barbara Milkvetch is valued for its drought tolerance and ability to thrive in challenging conditions, making it suitable for xeriscaping and native plant gardens. It is often used in habitat restoration projects and as an ornamental in dry, sunny borders. It requires minimal maintenance once established, preferring full sun and well-draining sandy or loamy soils. While it is generally disease-resistant, it can be susceptible to root rot if overwatered. This plant is also an important food source for native wildlife, including butterflies and other pollinators.CC BY-SA 4.0