Practical
Plants

Polygonum convolvulus

Black Bindweed

an annual member of the Polygonum genus in the family Polygonaceae.

No photo available

Taxonomy and growth

Life cycle
annual
Height
1.2 m
Fertility
Self fertile, Insects, Self
Flower type
hermaphrodite
Pollinators
Insects, Self

Uses

Toxicity

Toxicity warning. The historical record reports a hazard for this plant. Do not use it to decide which parts are safe to eat or use medicinally.

This section contains historical Plants For A Future notes marked noncommercial.

Although no specific mention has been made for this species, there have been reports that some members of this genus can cause photosensitivity in susceptible people. Many species also contain oxalic acid (the distinctive lemony flavour of sorrel) - whilst not toxic this substance can bind up other minerals making them unavailable to the body and leading to mineral deficiency. Having said that, a number of common foods such as sorrel and rhubarb contain oxalic acid and the leaves of most members of this genus are nutritious and beneficial to eat in moderate quantities. Cooking the leaves will reduce their content of oxalic acid. People with a tendency to rheumatism, arthritis, gout, kidney stones or hyperacidity should take especial caution if including this plant in their diet since it can aggravate their condition[6].

Edible uses

This section contains historical Plants For A Future notes marked noncommercial.

Seed - ground into a powder and used as a gruel or mixed with cereals[4]. The seed coat should be removed before use, this has caused mechanical injury to the digestive systems of animals who have eaten the seed[7]. The seed is rather small and fiddly to utilize.

Plant part
Seed

Environment

Range
Europe, including Britain, from Norway south and east to N. Africa and temperate Asia.
Habitat
Waste places, arable land and gardens[2].
Light
full sun
Shade tolerance
light shade
Water
moderate
Soil textures
sandy, loamy, clay
Soil pH
acid, neutral, alkaline
Tolerates Nutritionally Poor Soil
No
Drought
intolerant

Propagation

This section contains historical Plants For A Future notes marked noncommercial.

Seed - sow spring in situ.

Cultivation

This section contains historical Plants For A Future notes marked noncommercial.

Succeeds in an ordinary garden soil[1] but prefers a moisture retentive not too fertile soil in sun or part shade[3]. A scrambling climbing plant[4], it is often a troublesome weed of agricultural fields[7]. Plants seem to be immune to the predations of rabbits[5].

References

  1. F. Chittendon. RHS Dictionary of Plants plus Supplement. 1956 Oxford University Press 1951-00-00

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  2. Clapham, Tootin and Warburg. Flora of the British Isles. Cambridge University Press 1962-00-00

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  3. Huxley. A. The New RHS Dictionary of Gardening. 1992. MacMillan Press 1992-00-00 ISBN 0-333-47494-5

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  4. Coffey. T. The History and Folklore of North American Wild Flowers. Facts on File. 1993-00-00 ISBN 0-8160-2624-6

    ↩1↩2

  5. Thomas. G. S. Perennial Garden Plants J. M. Dent & Sons, London. 1990-00-00 ISBN 0 460 86048 8

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  6. Bown. D. Encyclopaedia of Herbs and their Uses. Dorling Kindersley, London. 1995-00-00 ISBN 0-7513-020-31

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  7. Grieve. A Modern Herbal. Penguin 1984-00-00 ISBN 0-14-046-440-9

    ↩1↩2

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