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Sonchus oleraceus - L.

Sow Thistle

Author	L.	Botanical references	17
Family	Compositae	Genus	Sonchus
Synonyms
Known Hazards	None known
Range	Europe, including Britain, south and east from Scandanavia to N. Africa, N. and W. Asia.
Habitat	Waysides, waste and cultivated ground[17]. A common weed, avoiding acid soils and shady positions[1].
Edibility Rating	2 (1-5)	Medicinal Rating	2 (1-5)

Physical Characteristics

Biennial growing to 1m.

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

Cultivated Beds;

Edible Uses

Edible Parts: Leaves; Root; Stem.

Edible Uses: Gum.

Young leaves - raw or cooked[2, 4, 9, 13, 54]. This species has the nicest tasting leaves of the genus[153], they usually have a mild agreeable flavour[217] especially in the spring[K]. They can be added to salads, cooked like spinach or used in soups etc[183]. The leaves contain about 30 - 40mg of vitamin C per 100g[173], 1.2% protein, 0.3% fat, 2.4% carbohydrate, 1.2% ash[179]. A zero moisture analysis is also available[218]. It might be best, though it is not essential, to remove the marginal prickles[9]. Stems - cooked like asparagus or rhubarb[12]. They are best if the outer skin is removed first[183]. Young root - cooked[12]. They are woody and not very acceptable[144]. The milky sap has been used as a chewing gum by the Maoris of New Zealand[183].

Composition

Figures in grams (g) or miligrams (mg) per 100g of food.

Leaves (Dry weight)

• 265 Calories per 100g
• Water: 0%
• Protein: 28g; Fat: 4.5g; Carbohydrate: 45g; Fibre: 5.9g; Ash: 22g;
• Minerals - Calcium: 1500mg; Phosphorus: 500mg; Iron: 45.6mg; Magnesium: 0mg; Sodium: 0mg; Potassium: 0mg; Zinc: 0mg;
• Vitamins - A: 35mg; Thiamine (B1): 1.5mg; Riboflavin (B2): 5mg; Niacin: 5mg; B6: 0mg; C: 60mg;
• Reference: []
• Notes: 

Medicinal Uses

Plants For A Future can not take any responsibility for any adverse effects from the use of plants. Always seek advice from a professional before using a plant medicinally.

Cancer; Emmenagogue; Febrifuge; Hepatic; Hydrogogue; Poultice; Tonic; Warts.

The plant is emmenagogue and hepatic[61, 257]. An infusion has been used to bring on a tardy menstruation and to treat diarrhoea[257]. The latex in the sap is used in the treatment of warts[218]. It is also said to have anticancer activity[218]. The stem juice is a powerful hydrogogue and cathartic, it should be used with great caution since it can cause colic and tenesmus[218]. The gum has been used as a cure for the opium habit[257]. The leaves are applied as a poultice to inflammatory swellings[4]. An infusion of the leaves and roots is febrifuge and tonic[240].

Other Uses

Latex.

The latex in the stem contains 0.14% rubber, but this is much too low for commercial exploitation[218].

Cultivation details

Succeeds in most soils in a sunny position. This plant has been cultivated for its edible leaves by the Maoris of New Zealand[153]. The plant is a good companion for onions, tomatoes, corn as well as the cucumber and squash family[14].

Propagation

Seed - sow spring in situ. This species is a common garden weed and should not need any encouragement.

Links

References

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

[1] F. Chittendon. RHS Dictionary of Plants plus Supplement. 1956 Oxford University Press 1951
Comprehensive listing of species and how to grow them. Somewhat outdated, it has been replaces in 1992 by a new dictionary (see [200]).

[2] Hedrick. U. P. Sturtevant's Edible Plants of the World. Dover Publications 1972 ISBN 0-486-20459-6
Lots of entries, quite a lot of information in most entries and references.

[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.

[9] Launert. E. Edible and Medicinal Plants. Hamlyn 1981 ISBN 0-600-37216-2
Covers plants in Europe. a drawing of each plant, quite a bit of interesting information.

[12] Loewenfeld. C. and Back. P. Britain's Wild Larder. David and Charles 0 ISBN 0-7153-7971-2
A handy pocket guide.

[13] Triska. Dr. Hamlyn Encyclopaedia of Plants. Hamlyn 1975 ISBN 0-600-33545-3
Very interesting reading, giving some details of plant uses and quite a lot of folk-lore.

[14] Holtom. J. and Hylton. W. Complete Guide to Herbs. Rodale Press 1979 ISBN 0-87857-262-7
A good herbal.

[17] Clapham, Tootin and Warburg. Flora of the British Isles. Cambridge University Press 1962
A very comprehensive flora, the standard reference book but it has no pictures.

[54] Hatfield. A. W. How to Enjoy your Weeds. Frederick Muller Ltd 1977 ISBN 0-584-10141-4
Interesting reading.

[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.

[144] Cribb. A. B. and J. W. Wild Food in Australia. Fontana 1976 ISBN 0-00-634436-4
A very good pocket guide.

[153] Brooker. S. G., Cambie. R. C. and Cooper. R. C. Economic Native Plants of New Zealand. Oxford University Press 1991 ISBN 0-19-558229-2
An interesting and readable book on the useful plants of New Zealand.

[173] Crowe. A. Native Edible Plants of New Zealand. Hodder and Stoughton 1990 ISBN 0-340-508302
A very well written and illustrated book based on the authors own experiments with living on a native diet.

[179] Reid. B. E. Famine Foods of the Chiu-Huang Pen-ts'ao. Taipei. Southern Materials Centre 1977
A translation of an ancient Chinese book on edible wild foods. Fascinating.

[183] Facciola. S. Cornucopia - A Source Book of Edible Plants. Kampong Publications 1990 ISBN 0-9628087-0-9
Excellent. Contains a very wide range of conventional and unconventional food plants (including tropical) and where they can be obtained (mainly N. American nurseries but also research institutes and a lot of other nurseries from around the world.

[217] Les Ecologistes de l'Euzière Les Salades Sauvages Not given. 1994 ISBN 2-906128-04-X
A lovely little book about some wild salads in France. Written in French.

[218] Duke. J. A. and Ayensu. E. S. Medicinal Plants of China Reference Publications, Inc. 1985 ISBN 0-917256-20-4
Details of over 1,200 medicinal plants of China and brief details of their uses. Often includes an analysis, or at least a list of constituents. Heavy going if you are not into the subject.

[240] Chopra. R. N., Nayar. S. L. and Chopra. I. C. Glossary of Indian Medicinal Plants (Including the Supplement). Council of Scientific and Industrial Research, New Delhi. 1986
Very terse details of medicinal uses of plants with a wide range of references and details of research into the plants chemistry. Not for the casual reader.

[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

Plants for a Future does not verify the accuracy of reader comments, use at your own risk. In particular Plants For A Future can not take any responsibility for any adverse effects from the use of plants. You should always consult a professional before using plants medicinally.

Weeds as a future source for human consumption

Martha Díaz B Thu Jun 28 17:02:26 2001

We reciently recieved this article on the use of various weeds in south america. We though that you might enjoy it.

Abstract

Weeds may constitute an additional food source for humans. Up to 66% of weed species are edible and abound in urban and agricultural environments. A total of 43 species were sampled in tropical areas in Coatepec Mexico (e.g. roadsides, urban vacant lots, streets, sugar cane and coffee plantations). A similar survey performed in a temperate area in Bariloche Argentina with 32 species sampled. At a greater geographic scale, a comparison between Mexican and Argentine weeds shows that, proportionately, the food parts vary a little between regions. In general, the uses go from leaves, seeds, roots, fruits, and flowers.

Link: Weeds as a future source for human consumption

Weeds as a future source for human consumption

Martha Díaz B Thu Jun 28 17:02:26 2001

We reciently recieved this article on the use of various weeds in south america. We though that you might enjoy it.

Abstract

Weeds may constitute an additional food source for humans. Up to 66% of weed species are edible and abound in urban and agricultural environments. A total of 43 species were sampled in tropical areas in Coatepec Mexico (e.g. roadsides, urban vacant lots, streets, sugar cane and coffee plantations). A similar survey performed in a temperate area in Bariloche Argentina with 32 species sampled. At a greater geographic scale, a comparison between Mexican and Argentine weeds shows that, proportionately, the food parts vary a little between regions. In general, the uses go from leaves, seeds, roots, fruits, and flowers.

Link: Weeds as a future source for human consumption

Weeds as a future source for human consumption

Klaus Thu Aug 16 16:12:55 2001

I really wonder what this has to do with montia perfoliata. The edible uses of weeds might be interesting, but not as a comment to this plant.

Weeds as a future source for human consumption

Klaus Thu Aug 16 16:12:55 2001

I really wonder what this has to do with montia perfoliata. The edible uses of weeds might be interesting, but not as a comment to this plant.

Edible Wild Plants For Tortoises

Linda King Sat Aug 18 18:20:37 2001

http://www.tlady.clara.net/TortGuide/Diet.htm

Please go to my main Diet page and click on the Plant List link at the top. This is a new section of my Tortoise Care website, and is an illustrated Edible Wild Plants list for tortoise keepers in the UK. Click on the Latin names to see the illustrations which are all original work. The information with the illustrations would be equally applicable to iguanas and herbivorous mammals.

Sonchus oleraceus

Stephen Mifsud Tue Feb 25 11:58:45 2003

Link: Malta Wild Plants Online Database Information, botanical details, high quality photos

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