Botanical atlas

Alpine Milk Vetch

Astragalus alpinus

Unlike its well-known cousin Astragalus membranaceus, the root long used in Chinese herbalism, Alpine Milk Vetch has never built up a solid, documented tradition as a food or medicine among the peoples who share its cold, wind-scoured range. Its real legacy is ecological rather than culinary: as a legume, it works quietly at the roots to fix nitrogen and enrich thin tundra and alpine soils, helping tougher, hungrier ground support more life. Caribou, ptarmigan, and other arctic wildlife have long grazed its foliage and pods, and botanists have prized it since Linnaeus first described the species in 1753 as one of the toughest, most far-flung legumes on earth. Today it earns its place mostly in rock gardens and native plantings, valued for its resilience and its cheerful purple spikes rather than for any cup, poultice, or plate.

Safety.

Alpine milk vetch doesn't share the well-documented safety record of its relative Astragalus membranaceus (huang qi). Several wild vetches in this genus are toxic 'locoweeds' for grazing animals and have been fatally confused with poisonous lookalikes, so this one is best left for admiring, not foraging.