About Artemisia longifolia Nutt.
Artemisia longifolia Nutt. is a North American plant species in the daisy family, with the common names long-leaved sage and longleaf wormwood. It is native to western Canada, specifically the provinces of Manitoba, Saskatchewan, Alberta, and British Columbia, as well as the north-central United States, where it occurs in Montana, North Dakota, South Dakota, Minnesota, Wyoming, and Colorado, with a small number of isolated populations located in Oklahoma. This species is a perennial plant that grows up to 80 cm (32 inches) tall, and it does not usually form clumps. Its leaves are longer and narrower than the leaves of most related species, reaching up to 12 cm (5 inches) in length. Artemisia longifolia grows in barren areas, grasslands, and alkaline flats on the high plains. Unlike many other species in the genus Artemisia, it is completely deciduous. In cultivation, gardener and author Claude A. Barr considered Artemisia longifolia a handsome plant, valued for its foliage and the very pleasant scent its foliage produces when brushed against or crushed. It behaves relatively well in garden settings: it does not seed as freely as some other Artemisia species, and it is only somewhat rhizomatous.
