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Cirsium edule

Cirsium edule: Flower
Photo by Derrick Ditchburn. High resolution version

Common name:	Edible Thistle	Family:	Compositae
Author:	Nutt.	Botanical references:	60, 200
Synonyms:
Known Hazards:	None known
Range:	Western N. America - southwards from Canada.
Habitat:	Wet meadows and open woods in mountains[60].
Edibility Rating (1-5):	3	Medicinal Rating (1-5):	0

Other Possible Synonyms:	From various places across the web, may not be correct. See below.
	C. macounii[B,P] Carduus macounii[B,P]
Other Common Names:	From various places around the Web, may not be correct. See below.
	Edible Thistle [P,B],
Epithets:	From a Dictionary of Botanical Epithets
	edule = edible
Systematics:	From a USDA Plants Database
	Order: Asterales. Renamed to Asteraceae -- Aster family

Physical Characteristics

Perennial growing to 2m. It is hardy to zone 7. It is in flower from July to August, and the seeds ripen from August to September. The flowers are hermaphrodite (have both male and female organs) and are pollinated by Bees, flies, Lepidoptera (Moths & Butterflies) and beetles. The plant is self-fertile. We rate it 3/5 for edibility and 0/5 for medicinal use.

The plant prefers light (sandy), medium (loamy) and heavy (clay) soils. The plant prefers acid, neutral and basic (alkaline) soils. It cannot grow in the shade. It requires moist soil.

Habitats and Possible Locations

Bog Garden, Woodland, Dappled Shade, Shady Edge.

Edible Uses

Root Stem.

Root - cooked[95, 105, 161, 257]. The root is likely to be rich in inulin, a starch that cannot be digested by humans. This starch thus passes straight through the digestive system and, in some people, ferments to produce flatulence[K].
Young stems - peeled and eaten raw[46, 61, 95, 105]. Soft and sweet[161], they are considered to be a luxury food[257].
Young shoots - raw or cooked as greens[257]. Harvested in spring[257].

Medicinal Uses

Disclaimer

None known

Other Uses

Oil.

The seed of all species of thistles yields a good oil by expression[4]. No details of potential yields etc are given[K].

Cultivation details

An easily grown plant, succeeding in any ordinary garden soil in a sunny position[200].
A monocarpic species, it grows for a number of years without flowering but then dies after flowering[60].

Propagation

Seed - sow early spring or autumn in situ. Germination usually takes place within 2 - 8 weeks at 20° c.

Suppliers

For more details of plant suppliers please see our Suppliers Page which lists many more places to look.

Web References

Details of Medicinal Uses, Habitats, etc. in M. Grieve A Modern Herbal (1931) [4]
[B] Data (Latin & Common names, other references) from the BONAP's Synonymized Checklist of the Vascular Flora of the United States, Puerto Rico, and the Virgin Islands.
[P] Data. (uses, distribution, wetland) from the USDA'a Plants database.
[P] Data. (uses, distribution, wetland) from the USDA'a Plants database.
[HP] Links, Photos, Suppliers from Hortiplex Plant Database

See the PFAF Links Pages for other sources.

Also try Photos and info from the The Plants Database which has 14,000 images.

References

[K] Ken Fern
Notes from observations, tasting etc at Plants For A Future and on field trips.

[4] Grieve. A Modern Herbal. Penguin 1984 ISBN 0-14-046-440-9
Not so modern (1930's?) but lots of information, mainly temperate plants.

[46] Uphof. J. C. Th. Dictionary of Economic Plants. Weinheim 1959
An excellent and very comprehensive guide but it only gives very short descriptions of the uses without any details of how to utilize the plants. Not for the casual reader.

[60] Hitchcock. C. L. Vascular Plants of the Pacific Northwest. University of Washington Press 1955
A standard flora for Western N. America with lots of information on habitat etc. Five large volumes, it is not for the casual reader.

[61] Usher. G. A Dictionary of Plants Used by Man. Constable 1974 ISBN 0094579202
Forget the sexist title, this is one of the best books on the subject. Lists a very extensive range of useful plants from around the world with very brief details of the uses. Not for the casual reader.

[95] Saunders. C. F. Edible and Useful Wild Plants of the United States and Canada. Dover Publications 1976 ISBN 0-486-23310-3
Useful wild plants of America. A pocket guide.

[105] Tanaka. T. Tanaka's Cyclopaedia of Edible Plants of the World. Keigaku Publishing 1976
The most comprehensive guide to edible plants I've come across. Only the briefest entry for each species, though, and some of the entries are more than a little dubious. Not for the casual reader.

[161] Yanovsky. E. Food Plants of the N. American Indians. Publication no. 237. U.S. Depf of Agriculture.
A comprehensive but very terse guide. Not for the casual reader.

[200] Huxley. A. The New RHS Dictionary of Gardening. 1992. MacMillan Press 1992 ISBN 0-333-47494-5
Excellent and very comprehensive, though it contains a number of silly mistakes. Readable yet also very detailed.

[257] Moerman. D. Native American Ethnobotany Timber Press. Oregon. 1998 ISBN 0-88192-453-9
Very comprehensive but terse guide to the native uses of plants. Excellent bibliography, fully referenced to each plant, giving a pathway to further information. Not for the casual reader.

Readers Comments

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Plant information taken from the Plants For A Future - Species Database. Copyright (c) 1997-2003.
WEB search engine by Rich Morris - Home Page- Contact Info
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