Western Blue Flag (Iris Missouriensis) is a perennial herb in the Iridaceae family with moderate care difficulty. It requires moderate watering and full sun or partial shade light in USDA hardiness zones 3-8. This plant is toxic to cats and dogs — keep it out of reach of pets.

Iris missouriensis is a rhizomatous perennial native to western North America, known for its large, delicate pale blue to lavender flowers often with purple veins.