Oxytropis campestris, the field locoweed,[3] is a plant native to Northern Europe, the mountains of Central & Southern Europe, the Northwestern United States and all of Canada, sometimes grown as an ornamental plant.

It is found in prairies, woods, and meadows, and prefers gravelly and rocky slopes, where it grows most abundantly.

It is a larval host plant of the small blue butterfly[4] Oxytropis campestris blooms flowers from May to July.

They are of a cream to yellowish color, but sometimes of pink, blue, or purple, with hairs that are usually black.

The plant grows perennially, with an acaulescent forb reaching 20 to 50 cm in height and has a taproot.