Cardamine oligosperma, commonly known as Little Western Bittercress, is an annual or biennial herb native to moist, open areas in mountainous regions and forest clearings across western North America, from Alaska through California and east to Colorado. It typically grows 3-20 inches tall, with upright stems and basal rosettes of leaves. The plant produces small, white flowers from early spring to autumn, which are modest in appearance but can add a delicate touch to the landscape. The siliques of Little Western Bittercress contain 15-22 seeds and are known for their ballistic seed dispersal mechanism, which can shoot seeds a considerable distance when the fruits are touched.

Little Western Bittercress is appreciated for its edible leaves, which can be used fresh in salads or cooked, adding a peppery flavor similar to arugula or watercress. It is often found in moist, well-drained soils in partial shade to full sun. While not commonly cultivated, it can be a welcome addition to wildflower gardens or naturalized areas. Gardeners should be aware that its seed dispersal method can lead to self-sowing and potential spread within the garden.CC BY-SA 4.0