Codonopsis ovata

Codonopsis ovata is a small perennial in the bellflower family, Campanulaceae. It grows from tuberous roots below ground. Kew places its native range from Central Asia to the western Himalaya. Plants For A Future also lists northwest India and Pakistan. That source describes rocky alpine slopes, often among shrubs. Its habitat account names the eastern Himalaya, unlike Kew’s range. It records elevations of 9,840–13,780 feet [3,000–4,200 metres]. Kew classes its climate as subalpine or subarctic.

In gardens, plants reach about 1.3 feet [0.4 metres] tall. They spread to about 1.3 feet [0.4 metres] across. Flowers appear from June to August. Each flower has both male and female organs. Seeds ripen from August to September. The supplied species evidence gives no flower colour or shape. It also lacks clear details of leaves, stems, and fruit. The RHS describes these traits only for the wider genus.

Choose fertile, light soil that drains well but stays moist. Sandy and loamy soils both suit this plant. It accepts mildly acid to neutral soil, with slight acidity preferred. Grow it in partial shade or full sun. In full sun, soil must stay moist through the growing season. A woodland garden or partly shaded edge provides a suitable setting. Plants For A Future lists USDA zones 4–8. It reports that dormant plants withstand about −20°C. Yet new spring growth can suffer frost damage. Shelter from early morning sun and winter mulch are advised.

This species can be hard to grow in gardens. Its roots dislike disturbance, so choose a lasting planting spot. Move young plants there as soon as conditions allow. Sow seed on the surface from spring to early summer. Use ericaceous compost under glass and keep it from drying. Seeds may sprout within one to six weeks at 20°C. Keep seedlings under glass through their first winter. Plant them out in late spring or early summer. Protect young plants from slugs until they establish. Spring division needs care to limit root damage.

The root is edible when cooked, or dried and powdered. The source describes it as food used during famine. It records poultices made from roots and leaves for wounds and bruises. These reports describe traditional use, not proof of medical benefit. Plants For A Future lists no known hazards. That does not establish safety for every person or pet.