Delphinium barbeyi, commonly known as Subalpine Larkspur, is a deciduous perennial herb native to the montane and subalpine meadows, as well as open woodlands of the Rocky Mountains in the Mountain West of the United States. It can reach up to 1.5 meters in height, with leaves that are mainly concentrated along the stem, becoming sparse or absent near the base during the flowering period. The plant features a tall inflorescence that can bear up to 50 showy, dark purple-blue flowers, each with five sepals and delicate whitish or yellowish hairs inside. The flowers are arranged on pedicels up to 6 centimeters long, and the fruit is a follicle up to 2.2 centimeters long. Subalpine Larkspur is a long-lived species, with individuals capable of living over 75 years. The flowers are highly attractive to bumblebees and hummingbirds, which are drawn to their nectar.

Subalpine Larkspur is valued for its striking flowers and longevity, making it a desirable addition to wildflower gardens, meadow plantings, and naturalized areas. It thrives in part shade, requiring medium amounts of water and well-draining soil. While it is relatively low-maintenance, it can be susceptible to crown rot if grown in poorly drained soils. It is also important to note that all parts of the plant are toxic if ingested, so it should be planted with caution in areas accessible to children and pets.CC BY-SA 4.0