The stems and leaves of this plant are toxic and will kill livestock
. There is no conclusive proof of this, based on native North American Indian usage it is likely that the roots and stems are edible, though the flowering tops might be poisonous
Root - raw or cooked
. Crisp and delicious
, it has an agreeable nutty flavour
. The root is considered to be edible in the spring and the autumn but it so closely resembles some very poisonous plants that it should be considered unsafe to eat
The aromatic leaves are used as a relish
. Some caution is advised - see the notes above on toxicity
There are no material uses listed for Sium suave.
An infusion of the crushed root has been used as a poultice to bring relief from the pain of a broken limb
A decoction of the roots has been used by women in the treatment of epilepsy
Seed - sow late winter to early spring in a cold frame. The seed can be slow to germinate
. Prick out the seedlings into individual pots when they are large enough to handle and plant them out in the summer if they are large enough. Otherwise, grow them on in a cold frame for their first winter and plant them out in the following spring.
Division in early spring just before new growth begins. Use the side roots
. Larger divisions can be planted out direct into their permanent positions. We have found it best to pot up the smaller divisions and grow them on in a lightly shaded position in a cold frame, planting them out once they are well established in the summer.
Practical Plants is currently lacking information on propagation instructions of Sium suave. Help us fill in the blanks! Edit this page to add your knowledge.
Prefers a light, rich, moisture retentive soil in full sun
Problems, pests & diseases
Associations & Interactions
There are no interactions listed for Sium suave. Do you know of an interaction that should be listed here? edit this page to add it.
Polycultures & Guilds
There are no polycultures listed which include Sium suave.
This table shows all the data stored for this plant.
Material uses & Functions
Native Climate Zones
Adapted Climate Zones
Native Geographical Range
Root Zone Tendancy
? 1.01.11.21.3 Craighead. J., Craighead. F. and Davis. R. A Field Guide to Rocky Mountain Wildflowers The Riverside Press ISBN 63-7093 (1963-00-00)
? Turner. N. J. Food Plants of Coastal First Peoples UBC Press. Vancouver. ISBN 0-7748-0533-1 (1995-00-00)
? 3.03.13.23.184.108.40.206.7 Moerman. D. Native American Ethnobotany Timber Press. Oregon. ISBN 0-88192-453-9 (1998-00-00)
? 4.04.14.2 Usher. G. A Dictionary of Plants Used by Man. Constable ISBN 0094579202 (1974-00-00)
? 5.05.15.2 Tanaka. T. Tanaka's Cyclopaedia of Edible Plants of the World. Keigaku Publishing (1976-00-00)
? 6.06.16.2 Facciola. S. Cornucopia - A Source Book of Edible Plants. Kampong Publications ISBN 0-9628087-0-9 (1990-00-00)
? 7.07.17.2 Huxley. A. The New RHS Dictionary of Gardening. 1992. MacMillan Press ISBN 0-333-47494-5 (1992-00-00)
? F. Chittendon. RHS Dictionary of Plants plus Supplement. 1956 Oxford University Press (1951-00-00)
? Fernald. M. L. Gray's Manual of Botany. American Book Co. (1950-00-00)
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