![]() Plant information taken from the Plants For A Future. In general, the health-promoting properties of the plant probably far outweigh any possible disbenefits, especially if only the younger leaves are used. loids, and is sterile so it will not be as aggressive as wild plants. patens was grown on sterile peat pellets under. tuberosum, which arises as a cross between the introduced hybrid Symphytum asperum 9 S. Most people would have to consume very large quantities of the plant in order to do any harm, though anyone with liver problems should obviously be more cautious. COMFREY (Knit-bone) Symphytum officinale. Selaginella moellendorffii (Sm), Zea mays (Zm), Symphytum tuberosum (St). the triple hybrids Symphytum asperum 9 S. Largest concentrations are found in the roots, leaves contain higher quantities of the alkaloid as they grow older and young leaves contain almost none. This plant contains small quantities of a toxic alkaloid which can have a cumulative effect upon the liver. Known hazards of Symphytum tuberosum: No reports of toxicity have been seen for this species, but the following reports have been seen for S. angustifolium/nodosum (Pawowski 1972, Valds 2011). tuberosum and central- and eastern-European subsp. tuberosum, the latter comprising the western European subsp. These can either be potted up or planted out straight into their permanent positions.Ĭultivation of Symphytum tuberosum: Woods, scrub and by rivers. ments of Symphytum in Flora Europaea and the Euro+Med Checklist recognize only two species: the Sicilian endemic S. The original root will regrow and you will have a number of root tops, each of which will make a new plant. Simply use a spade to chop off the top 7cm of root just below the soil level. Division succeeds at almost any time of the year. Suitable pH: acid, neutral and basic (alkaline) soils. Suitable for: light (sandy), medium (loamy) and heavy (clay) soils and can grow in heavy clay soil. 11 in stock View our Pot Size guide: A clump forming species making a low maound of pale green foliage and branched stems of pale yellow bells in spring, and summer if in good soil. The flowers are hermaphrodite (have both male and female organs) and are pollinated by Bees. If you have sufficient seed you can try an outdoor sowing in situ in the spring. Overview Perennial growing to 0.6 m by 0.6 m at a fast rate It is in flower from May to June. Bocking 14 is sterile, and therefore will not set seed (one of its advantages over other cultivars as it will not spread out of control), thus is propagated. Plant them out into their permanent positions in late spring or early summer, after the last expected frosts. When they are large enough to handle, prick the seedlings out into individual pots and grow them on in the greenhouse for their first winter. Propagation of the herb: Seed - sow spring or autumn in a cold frame. Other uses of Symphytum tuberosum: A good, and sometimes rampant, ground cover plant for a shady border or woodland. Reference page.Habitat of the herb: Woods, scrub and by rivers. World Plants: Synonymic Checklists of the Vascular Plants of the World In: Roskovh, Y., Abucay, L., Orrell, T., Nicolson, D., Bailly, N., Kirk, P., Bourgoin, T., DeWalt, R.E., Decock, W., De Wever, A., Nieukerken, E. c + 330 pp., Conservatoire et Jardin Botaniques, Genève 1984. ![]() 2), Gymnospermae, Dicotyledones (Acanthaceae – Cneoraceae). A critical inventory of vascular plants of the circum-mediterranean countries. Internet Archive, Lending Library Reference page. Symphytum longisetum, Symphytum bornmuelleri, Symphytum tuberosum, Symphytum bulbosum, Symphytum ibericum, or Symphytum. xxix + 370 pp., Cambridge University Press, Cambridge (UK), ISBN 9-X. True comfrey (Symphytum officinale) and Tuberous comfrey (Symphytum tuberosum) TheBryophytaNursery. comfrey 3 roots or rhizomes for planting of medicinal use. 103-106 in Tutin, T.G., Heywood, V.H., Burges, N.A., Moore, D.M., Valentine, D.H., Walters, S.M. VAT included (where applicable), plus postage.
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