Artemisia princeps (Yomogi) 9 cm Pot

Growth habit & appearance: Artemisia princeps is a softly aromatic perennial forming low, spreading clumps of grey-green, finely lobed leaves covered in a light silvery down. The foliage has a velvety texture and releases a warm herbal fragrance when handled. As the plant matures, it sends up upright stems carrying small clusters of yellowish flower heads typical of the Artemisia group. Its combination of soft colour, delicate leaf shape and pleasant aroma makes Yomogi an attractive and characterful presence in a herb garden.

Growing conditions: Fully hardy in the Irish climate, Yomogi thrives in full sun to partial shade and prefers well-drained, moderately fertile soil. Originating from Asia, it adapts well to Ireland’s cool, damp summers and spreads gradually via underground runners, forming a low mat only a few centimetres tall but capable of producing taller flowering stems later in the season up to 200cm. Supplied in a 9 cm pot, it should be planted out in prepared soil, and may be contained if you wish to manage its spread.

Traditional & herbal uses: Artemisia princeps is highly regarded in East Asian tradition for its use in moxibustion, where the dried, finely processed leaves are burned to provide warming stimulation. It is also well referenced for supporting weak appetite and in folk contexts for worm-related concerns. The aerial parts harvested in full flower are the traditional material.

Maintenance & harvesting: Cut back plants in late winter or early spring to encourage clean new growth. Harvest whole aerial parts when the plant is in full flower, or take young leaves earlier in the season for the highest quality. Yomogi spreads by rhizomes, so divide or lift sections if you want to control its expansion. It tolerates poorer soils well and generally requires little feeding—just ensure soil drainage is good, especially over winter. Removing old or woody stems each year keeps the plant vigorous and tidy.