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Common Name:

General Information

Rheum ribes is a Perennial up to 1.50 metres tall.
It has edible uses.

Known Hazards

Although no specific mention has been seen for this species, the leaves of some if not all members of this genus contain significant quantities of oxalic acid and should not be eaten in any quantity. Oxalic acid can lock up certain minerals in the body, especially calcium, leading to nutritional deficiency. The content of oxalic acid will be reduced if the plant is cooked. People with a tendency to rheumatism, arthritis, gout, kidney stones or hyperacidity should take especial caution if including this plant in their diet since it can aggravate their condition[].

Botanical References

,

Range

W. Asia - Turkey to Iran.

Habitat

Dry gorges among rocks, 2300 - 2700 metres[, ].

Properties

Edibility Rating
Habit	Perennial
Height	1.50 m
Pollinators	Wind
Cultivation Status	Wild

Cultivation Details

Prefers a deep, fertile, moderately heavy, humus rich, moisture retentive, well-drained soil in sun or semi-shade[]. Grows well in heavy clay soils. Best grown in a dry position, where it can be very long-lived[].
Hardy to about -20°c according to one report[] whilst another says that plants are somewhat tender in Britain[].
Plants in this genus seem to be immune to the predations of rabbits[].
Hybridizes freely with other members of this genus[].

Edible Uses

Leaf stem - cooked[, , ]. Eaten raw by the local people[].

Medicinal

None known

Other Uses

None known

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.