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Allium acuminatum

Common name:	Hooker's Onion	Family:	Alliaceae
Author:	Hook.	Botanical references:	60, 200
Synonyms:
Known Hazards:	Although no individual reports regarding this species have been seen, there have been cases of poisoning caused by the consumption, in large quantities and by some mammals, of certain members of this genus. Dogs seem to be particularly susceptible[76].
Range:	Western N. America - Washington to N. California.
Habitat:	Amongst dry sunny rocks on hills and plains[60, 203].
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.
	A. acuminatum var. cuspidatum[B,P]
Other Common Names:	From various places around the Web, may not be correct. See below.
	Taper-tip Onion [B], Tapertip Onion [P],
Epithets:	From a Dictionary of Botanical Epithets
	acuminatum = tapering gradually to a point

Physical Characteristics

Bulb growing to 0.3m by 0.08m . It is hardy to zone 6. It is in flower from May to June. The flowers are hermaphrodite (have both male and female organs) and are pollinated by Bees and insects. We rate it 3/5 for edibility and 2/5 for medicinal use.

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

Habitats and Possible Locations

Cultivated Beds.

Edible Uses

Flowers Leaves Root Seed.

Bulb - raw or cooked[105, 177]. Eaten in spring and early summer[161]. A strong flavour[257]. The bulb is 10 - 15mm wide[200].
Leaves - raw or cooked. Used as a relish[257].
Flowers - raw. Used as a garnish on salads.
The seed heads can be placed in hot ashes for a few minutes, then the seeds extracted and eaten[257].

Medicinal Uses

Disclaimer

Although no specific mention of medicinal uses has been seen for this species, members of this genus are in general very healthy additions to the diet. They contain sulphur compounds (which give them their onion flavour) and when added to the diet on a regular basis they help reduce blood cholesterol levels, act as a tonic to the digestive system and also tonify the circulatory system[K].

Other Uses

Repellent.

The growing plant is said to repel insects and moles[20]. The bulbs can be rubbed on the skin to repel insects[257].

Cultivation details

Prefers a sunny position in a light well-drained soil[1]. The bulbs tend to rot when grown in cool wet climates, even if they are given sharp drainage[203]. This species is best in a cold frame and given a dry summer rest[163, 203].
The bulbs should be planted fairly deeply[1]. Most members of this genus are intolerant of competition from other growing plants[203].
Grows well with most plants, especially roses, carrots, beet and chamomile, but it inhibits the growth of legumes[18, 20, 54]. This plant is a bad companion for alfalfa, each species negatively affecting the other[201].
Members of this genus are rarely if ever troubled by browsing deer[233].

Propagation

Seed - sow spring in a cold frame. Prick out the seedlings into individual pots when they are large enough to handle - if you want to produce clumps more quickly then put three plants in each pot. Grow them on in the greenhouse for at least their first winter and plant them out into their permanent positions in spring once they are growing vigorously and are large enough.
Division in spring. Very easy, the plants divide successfully at any time in the growing season and the divisions can be planted straight out into their permanent positions if required.

Suppliers

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

Web References

[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.
[C] Taxon data. from the CalFlora database.
Images from the CalPhoto database.
[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.
[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.

[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]).

[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.

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

[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.

[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.

[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.

[163] RHS Lily Group. Lilies and Related Plants.
Lots of interesting snippets about plants in the family Liliaceae (in the old, broad sense)

[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.

[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.

[201] Allardice.P. A - Z of Companion Planting. Cassell Publishers Ltd. 1993 ISBN 0-304-34324-2
A well produced and very readable book.

[203] Davies. D. Alliums. The Ornamental Onions. Batsford 1992 ISBN 0-7134-7030-5
Covers about 200 species of Alliums. A very short section on their uses, good details of their cultivation needs.

[233] Thomas. G. S. Perennial Garden Plants J. M. Dent & Sons, London. 1990 ISBN 0 460 86048 8
A concise guide to a wide range of perennials. Lots of cultivation guides, very little on plant uses.

[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.
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