Edible Parts:
Edible Uses: Condiment

Osha is an outstanding medicinal herb but a poor choice as an edible plant. Although the leaves are edible and the cooked foliage is reasonably palatable, the unpleasant roots and, more importantly, the real risk of confusing the plant with deadly spotted hemlock make it unsuitable for foraging as food. Its greatest value lies in its long history of traditional medicine and its ecological role in mountain ecosystems rather than its culinary potential [2-3]. Extreme caution is required. The leaves are edible fresh or cooked, while the roots are medicinal rather than edible. The seeds may be used as a seasoning, but they are not considered a food [2-3]. Despite the edible leaves, do not eat any part of this plant because confusing it with spotted hemlock (Conium maculatum) can be fatal. Edibility Rating: 1 out of 5 – Although the leaves are technically edible, the extreme risk of confusing this plant with deadly poisonous relatives means it should not be collected for food [2-3]. Taste and Preparation: The leaves have a flavor reminiscent of lovage, celery, and chervil with a noticeable resinous character. Fresh leaves can be added to salads, although cooking improves both their flavor and texture. Simmered leaves produce an attractive green broth and work well as a seasoning or potherb. The hollow stems are somewhat celery-like, with the tender upper portions being considerably more palatable than the fibrous lower stems. The flower clusters may also be cooked in soups or stews, where they resemble small heads of broccoli and contribute a pleasant herbal flavour. The roots are entirely different. They are intensely aromatic, resinous, acrid, and unpleasant as food. Even prolonged boiling fails to improve their flavor. They produce a cloudy white cooking liquid and leave a lingering numbness and strong resinous taste in the mouth. Although highly regarded medicinally, they have virtually no culinary value. Seasonality (Phenology): Osha flowers primarily from June through August. The leafy growth is available throughout the growing season, while the perennial roots remain underground year-round. Nutritional Value: No detailed nutritional analyses are available. As a leafy herb, the foliage likely contains vitamins, minerals, and antioxidants similar to other members of the parsley family, but the plant has traditionally been valued for its medicinal compounds rather than its nutritional contribution. Traditional Uses: Osha has a long history of use among Indigenous peoples of the Rocky Mountains, particularly as an important medicinal plant. People traditionally used the aromatic roots for respiratory complaints, fevers, infections, and other ailments. Unlike many medicinal plants, however, osha has never been an important food. Traditional use has centered overwhelmingly on medicine rather than nutrition [2-3]. Safety: Extreme caution is essential. Osha closely resembles spotted hemlock (Conium maculatum), one of North America's most poisonous plants. Misidentification can be fatal. Several features may help distinguish osha—including stems lacking prominent purple blotches, reddish leaf bases, shaggy persistent leaf bases surrounding the upper root, and generally few or no involucral bracts—but none of these characteristics is completely reliable on its own. Osha has a pleasant aromatic scent, unlike the unpleasant odor often associated with spotted hemlock, but smell alone should never be used for identification. Because no single feature provides complete certainty, osha should not be collected for food, even by experienced foragers [2-3]. The leaves are used as a flavouring, a celery substitute[155].

Plants For A Future can not take any responsibility for any adverse effects from the use of plants. Always seek advice from a professional before using a plant medicinally.
Antirheumatic  Antispasmodic  Diaphoretic  Diuretic  Expectorant  Febrifuge  Kidney  Stomachic  
TB  Uterine tonic

The roots, seed and essential oil (obtained from the roots and the seed) of this plant are a bitter, camphoraceous warming herb that stimulates the circulation, kidneys and uterus[238]. They are also antirheumatic, antispasmodic, diaphoretic, digestive, expectorant, febrifuge and stomachic[155, 172, 238]. They are used internally in the treatment of eruptive fevers, bronchial infections, digestive complaints, toothache, painful menstruation and retained placenta[238]. They have also been used to treat TB. and headaches[155, 172]. An infusion of the roots is used externally to treat body aches[257]. The root is harvested in the autumn and can be used fresh or dried[238].

Wildlife Value: The flowers provide nectar and pollen for a wide diversity of insects, while the foliage supports various native herbivorous insects. Large mammals occasionally browse the foliage.

Special Uses