Rheum spiciforme
At a glance
- Lifecycle
- Perennial (hardy)
- Exposure
- Full sun
Cultivation
Prefers a deep, fertile, moderately heavy, humus rich, moisture retentive, well-drained soil in sun or semi-shade. Grows well in heavy clay soils. Hardy to about -20°c. Plants in this genus seem to be immune to the predations of rabbits. Hybridizes freely with other members of this genus.
Propagation
Seed - best sown in autumn in a shaded cold frame. The seed can also be sown in spring in a cold frame. When large enough to handle, prick the seedlings out into individual pots and grow them on in the greenhouse or cold frame for their first winter, planting them out in the spring. Division in early spring or autumn. Divide up the rootstock with a sharp spade or knife, making sure that there is at least one growth bud on each division. Larger divisions can be planted out direct into their permanent positions. We have found that it is better to pot up the smaller divisions and grow them on in light shade in a cold frame until they are well established before planting them out in late spring or early summer.
Edible uses
Leaf stem - raw or cooked.
Medicinal uses
The root is used as a purgative.
Habitat
Shrubberies and open slopes in drier areas only, 3600 - 4800 metres.
Native range
E. Asia - Himalayas.