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Phaseolus vulgaris

Common name:	French Bean	Family:	Leguminosae
Author:	L.	Botanical references:	200
Synonyms:
Known Hazards:	Large quantities of the raw mature seed are poisonous[10, 65]. Children eating just a few seeds have shown mild forms of poisoning with nausea and diarrhoea, though complete recovery took place in 12 - 24 hours[269]. The toxins play a role in protecting the plant from insect predation[76].
Range:	S. America? Original habitat is obscure.
Habitat:	Not known in a truly wild situation.
Edibility Rating (1-5):	3	Medicinal Rating (1-5):	2

Other Possible Synonyms:	From various places across the web, may not be correct. See below.
	P. vulgaris var. humilis[B,P] P. vulgaris var. mexicanus[G]
Other Common Names:	From various places around the Web, may not be correct. See below.
	Bean [E], Boon [D], Common Beans [H], Fasulye [E], Great Bean [E], Haricots Verts [E], Judia [E], Kidney Bean [P,H,B], Pois Rouge [E],
Epithets:	From a Dictionary of Botanical Epithets
	vulgaris = common;
Systematics:	From a USDA Plants Database
	Order: Fabales. Renamed to Fabaceae -- Pea family
Other Range Info:	From the Ethnobotany Database
	China; Germany; Haiti; Spain; Turkey; Wi

Physical Characteristics

Annual growing to 2m. It is hardy to zone 10 and is frost tender. It is in leaf from May to October, in flower from July to September. The flowers are hermaphrodite (have both male and female organs) and are pollinated by Bees. The plant is self-fertile. It can fix Nitrogen. We rate it 3/5 for edibility and 2/5 for medicinal use.

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

Habitats and Possible Locations

Cultivated Beds.

Edible Uses

Coffee; Leaves; Seed; Seedpod.

Immature seedpods - raw or cooked[46, 105]. The green pods are commonly used as a vegetable, they have a mild flavour and should only be cooked for a short time. When growing the plant for its seedpods, be sure to pick them whilst they are still small and tender. This will ensure the continued production of more pods by the plant. Flowering is reduced once the seeds begin to form inside the pods.
The immature seeds are boiled or steamed and used as a vegetable[183].
The mature seeds are dried and stored for future use. They must be thoroughly cooked before being eaten and are best soaked in water for about 12 hours prior to this. They can be boiled, baked, pureed, ground into a powder or fermented into 'tempeh' etc[183]. The powdered seed makes a protein-enriching additive to flour, it can also be used in soups etc[K]. The seed can also be sprouted and used in salads or cooked[183].
The roasted seeds have been used as a coffee substitute[7].
Young leaves - raw or cooked as a potherb[177, 183]. The very young laves are sometimes eaten as a salad, the older leaves are cooked[269].

Composition

Leaves (Fresh weight): In grammes per 100g weight of food:
Water: 86.8 Calories: 36 Protein: 3.6 Fat: 0.4 Carbohydrate: 6.6 Fibre: 2.8 Ash: 2.6
In milligrammes per 100g weight of food:
Calcium: 2.74 Phosphorus: 75 Iron: 9.2 VitaminA: 3230 Thiamine: 0.18 Riboflavin: 0.06 Niacin: 1.3 VitaminC: 110
Source: [269]
Seed (Dry weight): In grammes per 100g weight of food:
Water: 10 Calories: 345 Protein: 22.5 Fat: 1.5 Carbohydrate: 62 Fibre: 4.3 Ash: 3.8
In milligrammes per 100g weight of food:
Calcium: 86 Phosphorus: 247 Iron: 6.6 Magnesium: 183 Sodium: 43.2 Potassium: 1160 VitaminA: 5 Thiamine: 0.54 Riboflavin: 0.19 Niacin: 2.1 VitaminC: 3
Source: [269]
Notes : These are average figures from three different varieties of beans.
Pod (Fresh weight): In grammes per 100g weight of food:
Water: 91 Calories: 30 Protein: 1.8 Fat: 0.2 Carbohydrate: 6.5 Fibre: 1 Ash: 0.7
Source: [269]

Medicinal Uses

Disclaimer

Cancer; Diuretic; Homeopathy; Hypoglycaemic; Hypotensive; Narcotic.

The green pods are mildly diuretic and contain a substance that reduces the blood sugar level[218]. The dried mature pod is used according to another report[9]. It is used in the treatment of diabetes[9].
The seed is diuretic, hypoglycaemic and hypotensive[7]. Ground into a flour, it is used externally in the treatment of ulcers[7]. The seed is also used in the treatment of cancer of the blood[218]. When bruised and boiled with garlic they have cured intractable coughs[4].
The root is dangerously narcotic[4].
A homeopathic remedy is made from the entire fresh herb[9]. It is used in the treatment of rheumatism and arthritis, plus disorders of the urinary tract[9].

Other Uses

Biomass; Dye; Fungicide; Miscellany.

A brown dye is obtained from red kidney beans[168].
The plant contains phaseolin, which has fungicidal activity[218].
Water from the cooked beans is very effective in reviving woollen fabrics[7].
The plant residue remaining after harvesting the dried beans is a source of biomass[269].

Cultivation details

Requires a warm sunny position in a rich well-drained preferably light soil with plenty of moisture in the growing season[27, 37, 200]. Dislikes heavy, wet or acid soils[16, 37]. Prefers a pH in the range 5.5 to 6.5[200].
The French bean is commonly cultivated in the temperate and subtropical zones and in montane valleys of the tropics for its edible mature seeds and immature seedpods. It is often grown to provide a major part of the protein requirement[183, 269]. A very variable plant, there are more than 1,000 named varieties ranging from dwarf forms about 30cm tall to climbing forms up to 3 metres tall[183, 186, 200, 269]. Plants are not frost-tolerant, air temperatures below 10°c can cause damage to seedlings[200]. When grown for their edible pods, the immature pods should be harvested regularly in order to promote extra flower production and therefore higher yields[200]. Yields of green pods averages about 3kg per square metre, though double this can be achieved[200].
French beans grow well with strawberries, carrots, cauliflowers, cucumbers, cabbage, beet, leek and celeriac[18, 20]. They are inhibited by alliums and fennel growing nearby[18, 20].
This species has a symbiotic relationship with certain soil bacteria, these bacteria form nodules on the roots and fix atmospheric nitrogen. Some of this nitrogen is utilized by the growing plant but some can also be used by other plants growing nearby[200]. When removing plant remains at the end of the growing season, it is best to only remove the aerial parts of the plant, leaving the roots in the ground to decay and release their nitrogen.

Propagation

Pre-soak the seed for 12 hours in warm water and sow in mid spring in a greenhouse. Germination should take place within 10 days. When they are large enough to handle, prick the seedlings out into individual pots and plant them out after the last expected frosts.
The seed can also be sown in situ in late spring though it may not ripen its seed in a cool summer.

Cultivars

'': There are many named varieties of this annual vegetable, with new forms being developed each year. At present there is not time to enter these in the database and it is recommended that you consult the book 'The Fruit and Vegetable Finder' which is updated regularly and can be obtained from libraries.

Suppliers

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

PFAF Web Pages

This plant is mentioned in the following web pages

Staple seed crops from perennials.

Web References

Latin and Worldwide Common Names From Multilingual Multiscript Plant Name Database by M. H. Porcher et. al. 1995 - 2000 Landcare Systems Research Laboratory, Department of Crop Production,Institute of Land and Food Resources, The University of Melbourne, Australia.
Details of Medicinal Uses, Habitats, etc. in M. Grieve A Modern Herbal (1931) [4]
[H] Details of Scandanavian and European Common names in Henriette's names database
[E] Ethnobotany Data (common names, uses, countries) from the Ethnobotany Database.
[V] Images from the Vascular Plant Image Gallery of the Texas A&M Bioinformatics Working Group.
[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.
[G] Data (Common Names, Uses, Distribution) from the USDA/ARS NPGS's GRIN taxonomic database.
[P] Data. (uses, distribution, wetland) from the USDA'a Plants database.
[HEC] Use, Folk Medicine, etc. from Handbook of Energy Crops by James Duke
[HP] Links, Photos, Suppliers from Hortiplex Plant Database

References for phaseolus vulgaris (a possible synonym).

[HP] PhotoFrom Henriette's plant pictures
[HP] PhotoFrom Henriette's plant pictures

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.

[7] Chiej. R. Encyclopaedia of Medicinal Plants. MacDonald 1984 ISBN 0-356-10541-5
Covers plants growing in Europe. Also gives other interesting information on the plants. Good photographs.

[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.

[10] Altmann. H. Poisonous Plants and Animals. Chatto and Windus 1980 ISBN 0-7011-2526-8
A small book, reasonable but not very detailed.

[16] Simons. New Vegetable Growers Handbook. Penguin 1977 ISBN 0-14-046-050-0
A good guide to growing vegetables in temperate areas, not entirely organic.

[18] Philbrick H. and Gregg R. B. Companion Plants. Watkins 1979
Details of beneficial and antagonistic relationships between neighbouring plants.

[20] Riotte. L. Companion Planting for Successful Gardening. Garden Way, Vermont, USA. 1978 ISBN 0-88266-064-0
Fairly good.

[27] Vilmorin. A. The Vegetable Garden. Ten Speed Press ISBN 0-89815-041-8
A reprint of a nineteenth century classic, giving details of vegetable varieties. Not really that informative though.

[37] Thompson. B. The Gardener's Assistant. Blackie and Son. 1878
Excellent general but extensive guide to gardening practices in the 19th century. A very good section on fruits and vegetables with many little known species.

[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.

[65] Frohne. D. and Pf�nder. J. A Colour Atlas of Poisonous Plants. Wolfe 1984 ISBN 0723408394
Brilliant. Goes into technical details but in a very readable way. The best work on the subject that I've come across so far.

[76] Cooper. M. and Johnson. A. Poisonous Plants in Britain and their Effects on Animals and Man. HMSO 1984 ISBN 0112425291
Concentrates mainly on the effects of poisonous plants to livestock.

[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.

[168] Grae. I. Nature's Colors - Dyes from Plants. MacMillan Publishing Co. New York. 1974 ISBN 0-02-544950-8
A very good and readable book on dyeing.

[177] Kunkel. G. Plants for Human Consumption. Koeltz Scientific Books 1984 ISBN 3874292169
An excellent book for the dedicated. A comprehensive listing of latin names with a brief list of edible parts.

[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.

[186] Beckett. G. and K. Planting Native Trees and Shrubs. Jarrold 1979
An excellent guide to native British trees and shrubs with lots of details about the plants.

[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.

[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.

[269] Duke. J. Handbook of Energy Crops - 1983
Published only on the Internet, excellent information on a wide range of plants.

Readers Comments

Weeds as a future source for human consumption

Martha D�az B (martha@ecologia.edu.mx) 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

Cross references: Plants: Acalypha wilkesiana, Amaranthus dubius, Amaranthus hybridus, Amaranthus spinosus, Anagallis arvensis, Alstroemeria aurea, Berberis buxifolia, Brassica rapa, Bidens odorata, Cichorius intybus, Cirsium vulgare, Claytonia perfoliata, Cytisus scoparius, Chenopodium album, Chrysanthemum leucanthemum, Canna indica, Chenopodium ambrosioides, Commelina diffusa, Commelina erecta, Drymaria cordata, Drymaria gracilis, Galinsoga quadriradiata, Heliconia caribaea, Hydrocotyle bonariensis, Hydrocotyle mexicana, Ipomoea purpurea, Ipomoea tilliacea, Ipomoea triloba, Hypochoeris radicata, Lactuca serriola, Malus sylvestris, Medicago lupulina, Melilotus albus, Margaranthus sulphureus, Oenothera odorata, Osmorhiza chilensis, Oxalis corniculata, Oxalis latifolia, Piper auritum, Plantago hirtella, Plantago lanceolata, Portulaca oleracea, Papaver rhoeas, Rumex acetosella, Rumex longifolius, Rumex obtusifolius, Sida acuta, Sida glabra, Sida rhombifolia, Sida spinosa, Solanum nigrum, Sonchus oleraceus, Spilanthes americana, Sanguisorba minor, Silybum marianum, Sonchus asper, Sonchus oleraceus, Stellaria media, Taraxacum officinale, Tragopogon dubius, Tradescantia fluminensis, Tagetes micrantha, Trifolium repens, Tripogandra serrulata, Xanthosoma robustum, Youngia japonica. Genera: Mentha.

Weeds as a future source for human consumption

Klaus (allmendeperma@web.de) 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.

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Bibliography

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
Blagdon Cross, Ashwater, Beaworthy, Devon, EX21 5DF, UK.
Website: www.pfaf.org Phone: 0845 458 4719/_44(0) 1208 872963

This page (UK) http://www.comp.leeds.ac.uk/cgi-bin/pfaf/arr_html?Phaseolus+vulgaris
This page (US) http://www.ibiblio.org/pfaf/cgi-bin/arr_html?Phaseolus+vulgaris

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We make no claims of magical effects or supernatural powers for any item in this catalog. In spite of legendary attributes or occult and craft tradition, such items are offered as curios only and beliefs concerning their magical effectiveness are related only for historical interest.