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Uses

Toxic parts

There have been cases of poisoning caused by the consumption, in large quantities and by some mammals, of this plant. Dogs seem to be particularly susceptible[1].

Edible uses

Notes

Bulb - raw or cooked[2][3]. A nice onion flavour, when chopped up finely they make a nice addition to salads and can also be used as a cooked vegetable or as a flavouring in cooked foods[K]. Some of the cultivars are considered to be gourmet onions[4].

Leaves - raw or cooked. A strong onion flavour[K].

Flowers - raw. Used as a garnish on salads. The flowers are somewhat dry and are less pleasant than many other species[K].

Flowers

Leaves

Material uses

The juice of the plant is used as a moth repellent and can also be rubbed onto the skin to repel insects[5].

The plant juice can be used as a rust preventative on metals and as a polish for copper and glass[5]. A yellow-brown dye is obtained from the skins of the bulbs[6][7]. Onion juice rubbed into the skin is said to promote the growth of hair and to be a remedy for baldness[5]. It is also used as a cosmetic to get rid of freckles[5].

The growing plant is said to repel insects and moles[8]. A spray made by pouring enough boiling water to cover 1kg of chopped unpeeled onions is said to increase the resistance of other plants to diseases and parasites[8].

Medicinal uses(Warning!)

Although rarely used specifically as a medicinal herb, the onion has a wide range of beneficial actions on the body and when eaten (especially raw) on a regular basis will promote the general health of the body.

The bulb is anthelmintic, anti-inflammatory, antiseptic, antispasmodic, carminative, diuretic, expectorant, febrifuge, hypoglycaemic, hypotensive, lithontripic, stomachic and tonic[2][5][9]. When used regularly in the diet it offsets tendencies towards angina, arteriosclerosis and heart attack[10]. It is also useful in preventing oral infection and tooth decay[10]. Baked onions can be used as a poultice to remove pus from sores[10].

Fresh onion juice is a very useful first aid treatment for bee and wasp stings, bites, grazes or fungal skin complaints[5][8]. When warmed the juice can be dropped into the ear to treat earache[10]. It also aids the formation of scar tissue on wounds, thus speeding up the healing process, and has been used as a cosmetic to remove freckles[5].

Ecology

Ecosystem niche/layer

Ecological Functions

Nothing listed.

Forage

Nothing listed.

Shelter

Nothing listed.

Propagation

Seed - sow spring in a cold frame. Seed is seldom produced by this plant[2]. Division in late summer. Harvest the bulbs as the foliage dies down and store them in a cool place. In areas with mild winters the bulbs are traditionally replanted on the shortest day of the year, but in colder areas it is best to wait until late winter or even early spring[2]. Plant the bulbs only just below the soil surface[2].

Practical Plants is currently lacking information on propagation instructions of Allium cepa aggregatum. Help us fill in the blanks! Edit this page to add your knowledge.



Cultivation

Prefers a sunny sheltered position in a light well-drained fertile soil[11] but tolerates most soils. Tolerates a pH in the range 4.5 to 8.3.

The potato onion was at one time fairly widely grown as a vegetable, but it has now fallen into virtual disuse[12]. There are still some named forms available[4]. This is a genuinely perennial form of A. cepa, the bulb grows deeper in the soil and divides to produce a number of underground bulbs each year in much the same way as shallots. Large bulbs divide to form 5 - 15 bulbs whilst smaller bulbs grow into one large bulb[13]. According to one report, the bulbs should be planted fairly deeply[11], whilst another report says that they should be planted just below soil level[2]. Onions grow well with most plants, especially roses, carrots, beet and chamomile, but they inhibit the growth of legumes[14][15][16]. This plant is a bad companion for alfalfa, each species negatively affecting the other[8].

Members of this genus are rarely if ever troubled by browsing deer[17].

Crops

Problems, pests & diseases

Associations & Interactions

There are no interactions listed for Allium cepa aggregatum. 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 Allium cepa aggregatum.

Descendants

Cultivars

Varieties

None listed.

Subspecies

None listed.

Full Data

This table shows all the data stored for this plant.

Taxonomy
Binomial name
Allium cepa aggregatum
Genus
Allium
Family
Alliaceae
Imported References
Edible uses
Medicinal uses
Material uses & Functions
Botanic
Propagation
Cultivation
Environment
Cultivation
Uses
Edible uses
None listed.
Material uses
None listed.
Medicinal uses
None listed.
Functions & Nature
Functions
Provides forage for
Provides shelter for
Environment
Hardiness Zone
5
Heat Zone
?
Water
moderate
Sun
full sun
Shade
no shade
Soil Texture
Soil Water Retention
Environmental Tolerances
    Ecosystems
    Native Climate Zones
    None listed.
    Adapted Climate Zones
    None listed.
    Native Geographical Range
    None listed.
    Native Environment
    None listed.
    Ecosystem Niche
    None listed.
    Root Zone Tendancy
    None listed.
    Life
    Deciduous or Evergreen
    ?
    Herbaceous or Woody
    ?
    Life Cycle
    ?
    Growth Rate
    ?
    Mature Size
    Fertility
    ?
    Pollinators
    Flower Colour
    ?
    Flower Type











    References

    1. ? Cooper. M. and Johnson. A. Poisonous Plants in Britain and their Effects on Animals and Man. HMSO ISBN 0112425291 (1984-00-00)
    2. ? 2.02.12.22.32.42.52.62.7 Grieve. A Modern Herbal. Penguin ISBN 0-14-046-440-9 (1984-00-00)
    3. ? 3.03.1 Organ. J. Rare Vegetables for Garden and Table. Faber (1960-00-00)
    4. ? 4.04.14.2 Facciola. S. Cornucopia - A Source Book of Edible Plants. Kampong Publications ISBN 0-9628087-0-9 (1990-00-00)
    5. ? 5.05.15.25.35.45.55.65.75.8 Chiej. R. Encyclopaedia of Medicinal Plants. MacDonald ISBN 0-356-10541-5 (1984-00-00)
    6. ? 6.06.1 Carruthers. S. P. (Editor) Alternative Enterprises for Agriculture in the UK. Centre for Agricultural Strategy, Univ. of Reading ISBN 0704909820 (1986-00-00)
    7. ? 7.07.1 Grae. I. Nature's Colors - Dyes from Plants. MacMillan Publishing Co. New York. ISBN 0-02-544950-8 (1974-00-00)
    8. ? 8.08.18.28.38.48.5 Allardice.P. A - Z of Companion Planting. Cassell Publishers Ltd. ISBN 0-304-34324-2 (1993-00-00)
    9. ? 9.09.1 Lust. J. The Herb Book. Bantam books ISBN 0-553-23827-2 (1983-00-00)
    10. ? 10.010.110.210.310.4 Chevallier. A. The Encyclopedia of Medicinal Plants Dorling Kindersley. London ISBN 9-780751-303148 (1996-00-00)
    11. ? 11.011.111.2 F. Chittendon. RHS Dictionary of Plants plus Supplement. 1956 Oxford University Press (1951-00-00)
    12. ? Simons. New Vegetable Growers Handbook. Penguin ISBN 0-14-046-050-0 (1977-00-00)
    13. ? Natural Food Institute, Wonder Crops. 1987. ()
    14. ? Philbrick H. and Gregg R. B. Companion Plants. Watkins (1979-00-00)
    15. ? Riotte. L. Companion Planting for Successful Gardening. Garden Way, Vermont, USA. ISBN 0-88266-064-0 (1978-00-00)
    16. ? Hatfield. A. W. How to Enjoy your Weeds. Frederick Muller Ltd ISBN 0-584-10141-4 (1977-00-00)
    17. ? Thomas. G. S. Perennial Garden Plants J. M. Dent & Sons, London. ISBN 0 460 86048 8 (1990-00-00)


    Facts about "Allium cepa aggregatum"RDF feed
    Article is incompleteYes +
    Article requires citationsNo +
    Article requires cleanupYes +
    Belongs to familyAlliaceae +
    Belongs to genusAllium +
    Has binomial nameAllium cepa aggregatum +
    Has common namePotato Onion +
    Has drought toleranceIntolerant +
    Has edible partFlowers +, Leaves + and Root +
    Has edible useUnknown use +
    Has fertility typeBees + and Insects +
    Has flowers of typeHermaphrodite +
    Has hardiness zone5 +
    Has material partUnknown part +
    Has material useCosmetic +, Dye +, Hair care +, Polish +, Repellent + and Rust treatments +
    Has mature height1.2 +
    Has medicinal partUnknown part +
    Has medicinal useAnthelmintic +, Antiinflammatory +, Antiseptic +, Antispasmodic +, Carminative +, Diuretic +, Expectorant +, Febrifuge +, Hypoglycaemic +, Hypotensive +, Lithontripic +, Skin +, Stomachic + and Tonic +
    Has search nameallium cepa aggregatum + and potato onion +
    Has shade toleranceNo shade +
    Has soil ph preferenceAcid +, Neutral +, Alkaline + and Very alkaline +
    Has soil texture preferenceSandy + and Loamy +
    Has soil water retention preferenceWell drained +
    Has sun preferenceFull sun +
    Has taxonomic rankSpecies +
    Has taxonomy nameAllium cepa aggregatum +
    Has water requirementsmoderate +
    Is taxonomy typeSpecies +
    PFAF cultivation notes migratedNo +
    PFAF edible use notes migratedNo +
    PFAF material use notes migratedNo +
    PFAF medicinal use notes migratedNo +
    PFAF propagation notes migratedNo +
    PFAF toxicity notes migratedNo +
    Tolerates nutritionally poor soilNo +
    Uses mature size measurement unitMeters +
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