Delphinium scaposum, commonly known as Tall Mountain Larkspur, is a deciduous perennial herb native to the mountainous regions of the Southwestern United States and Northern Mexico, particularly in open woodlands and meadows at high elevations. This plant typically grows to a height of 3-8 feet (0.9-2.4 meters) and a width of 1-3 feet (0.3-0.9 meters), with a slender, upright form. The Tall Mountain Larkspur produces showy spikes of blue and purple flowers in the summer, which are highly attractive to pollinators such as butterflies and hummingbirds.

In cultivation, Tall Mountain Larkspur is valued for its vertical accent and vibrant flower colors, which can add a dramatic effect to perennial borders and wildflower gardens. It requires full sun to part shade and prefers medium amounts of water, along with well-draining soil. While it is relatively easy to maintain, it can be susceptible to crown rot if grown in poorly drained soils. Tall Mountain Larkspur is also known for its toxic alkaloids, which can be harmful if ingested by humans or livestock. Gardeners should handle this plant with care and consider its placement to avoid accidental ingestion.CC BY-SA 4.0