Koanophyllon solidaginifolium, commonly known as Shrubby Umbrella Thoroughwort, is a perennial shrub native to arid and semi-arid regions, particularly in chaparral, desert scrub, and riparian areas of the Southwestern USA and Northern Mexico. It typically grows to a height and width of 2-3 feet (0.6-0.9 meters), forming a compact, rounded shape. The plant is characterized by its narrow, lance-shaped leaves and clusters of small, white flowers that bloom in the fall, providing a late-season nectar source for pollinators.

Shrubby Umbrella Thoroughwort is valued for its drought tolerance and ability to thrive in challenging environments, making it a suitable choice for xeriscaping and low-water-use gardens. It is also used for habitat restoration projects and as an ornamental in desert-themed landscapes. This shrub prefers full sun exposure and can tolerate a range of soil types, provided they have good drainage. While it is generally low-maintenance, occasional pruning can help maintain its shape and promote denser foliage. It is not commonly afflicted by serious pests or diseases, but overwatering can lead to root rot.CC BY-SA 4.0