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Yucca whipplei

Common name:	Our Lord's Candle	Family:	Agavaceae
Author:	Torr.	Botanical references:	11, 200
Synonyms:	Yucca funifera (K.Koch.), Hesperoyucca whipplei ((Torr.)Trel.), Hesperoyucca funifera
Known Hazards:	The roots contain saponins[222]. Whilst saponins are quite toxic to people, they are poorly absorbed by the body and so tend to pass straight through. They are also destroyed by prolonged heat, such as slow baking in an oven. Saponins are found in many common foods such as beans[K]. Saponins are much more toxic to some creatures, such as fish, and hunting tribes have traditionally put large quantities of them in streams, lakes etc in order to stupefy or kill the fish[K].
Range:	South-western N. America - S. California, Mexico.
Habitat:	Dry, grassy and often stony slopes to 1200 metres[84].
Edibility Rating (1-5):	3	Medicinal Rating (1-5):	0

Other Possible Synonyms:	From various places across the web, may not be correct. See below.
	Y. californica[B,P] Y. filifera[HORTIPLEX] Y. graminifolia[B,P] Y. hesperoyucca[H] Y. newberryi[B,P] Y. nitida[B,P] Y. whipplei ssp. intermedia[B,P] Y. whipplei ssp. parishii[B,P] Y. whipplei ssp. percursa[B,P] Y. whipplei var. graminifolia[B,P] Y. whipplei var. intermedia[B,P] Y. whipplei var. parishii[B,P] Y. whipplei var. percursa[B,P] Y. whipplei var. whipplei[B,P]
Other Common Names:	From various places around the Web, may not be correct. See below.
	Chaparral Yucca [P], Our Lord's Candle [FEIS], Our-lord's-candle [B], Spanish Bayonet [H],
Systematics:	From a USDA Plants Database
	Order: Liliales. Century-plant family

Physical Characteristics

An evergreen shrub growing to 2m by 1m at a slow rate. It is hardy to zone 8. It is in leaf all year, in flower from May to June. The scented flowers are hermaphrodite (have both male and female organs). The plant is self-fertile. We rate it 3/5 for edibility and 0/5 for medicinal use.

The plant prefers light (sandy), medium (loamy) and heavy (clay) soils, requires well-drained soil and can grow in nutritionally poor soil. The plant prefers acid, neutral and basic (alkaline) soils. It can grow in semi-shade (light woodland). It requires dry or moist soil and can tolerate drought. The plant can tolerates strong winds but not maritime exposure.

Habitats and Possible Locations

Woodland, Cultivated Beds, Sunny Edge, By Walls, By South Wall, By East Wall, By West Wall.

Edible Uses

Flowers; Fruit; Seed; Stem.

Fruit - raw or cooked.
Flowers - raw or cooked[46, 61, 84]. They are delicious raw, and can also be dried, crushed and used as a flavouring[84, 164]. Young flowers have been parboiled and eaten, whilst older flowers have been boiled in three lots of water before being eaten[257]. This suggests the flowers are quite bitter[K].
Flowering stem - raw or cooked[161]. It is best used when fully grown, but before the flower buds expand[95]. It can be peeled, cut into sections then cooked and used like asparagus[95, 164]. The roasted stems have been dried, ground into a powder then mixed with water to make cakes[257].
Seed - cooked. It can be ground into a powder or cooked and used as a gruel[46, 61, 161].

Medicinal Uses

Disclaimer

None known

Other Uses

Fibre; Soap.

A fibre obtained from the leaves is used for making ropes, baskets and mats[61, 82]. It is fine and white[92].
The leaves are used as paint brushes[92].
The roots are rich in saponins and can be used as a soap substitute[82].

Cultivation details

Thrives in any soil but prefers a sandy loam and full exposure to the south[11]. Requires a sunny position[11]. Prefers a hot dry position[166], strongly disliking winter wet[11]. Established plants are very drought tolerant[200]. Plants are hardier when grown on poor sandy soils[200].
Plants are hardy to at least -5°c[200] and tolerate short periods down to -10°c[187]. They grow well in the warmer maritime areas of Britain but need protection from winter rains[182]. Plants have survived to flowering at Kew and at Bodnant in N. Wales[187].
Cultivated as a fibre plant in Mexico[61].
A very ornamental plant[1], it requires late summer and autumn warmth to initiate flowering[11]. The flowers are sweetly scented[187].
Usually monocarpic, living for a number of years without flowering and dying after it does flower[11, 164]. Plants do produce suckers, however, and can be propagated by this means[78]. The flowers of most members of this genus can only be pollinated by a certain species of moth. This moth cannot live in Britain and, if fruit and seed is required, hand pollination is necessary. This can be quite easily and successfully done using something like a small paint brush. This species, however, is self-fertile and does not require the Yucca moth for pollination, setting fruit without hand pollination[11].
Plants in this genus are notably resistant to honey fungus[200].
Members of this genus seem to be immune to the predations of rabbits[233]

Propagation

Seed - sow spring in a greenhouse. Pre-soaking the seed for 24 hours in warm water may reduce the germination time. It usually germinates within 1 - 12 months if kept at a temperature of 20°c. Prick out the seedlings into individual pots when they are large enough to handle and grow them on in the greenhouse or cold frame for at least their first two winters. Plant them out into their permanent positions in early summer and consider giving them some winter protection for at least their first winter outdoors - a simple pane of glass is usually sufficient[K]. Seed is not produced in Britain unless the flowers are hand pollinated.
Root cuttings in late winter or early spring. Lift in April/May and remove small buds from base of stem and rhizomes. Dip in dry wood ashes to stop any bleeding and plant in a sandy soil in pots in a greenhouse until established[78].
Division of suckers in late spring. Larger divisions can be planted out direct into their permanent positions. We have found that it is best to pot up smaller divisions and grow them on in light shade in a greenhouse or cold frame until they are growing away well. Plant them out in the following spring.

Scent

Flowers: Fresh: The flowers are sweetly scented.

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

Web References

[H] Details of Scandanavian and European Common names in Henriette's names database
[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.
[C] Taxon data. from the CalFlora database.
Images from the CalPhoto database.
[P] Data. (uses, distribution, wetland) from the USDA'a Plants database.
[HP] Links, Photos, Suppliers from Hortiplex Plant Database
[FEIS] Data (Uses, Ecology, Fire Effects) from the USDA Forestry Service Fire Effects Information System.

References for Yucca filifera (a possible synonym).

[HP] Links, Photos, Suppliers from Hortiplex Plant Database

References for Yucca whipplei var. whipplei (a possible synonym).

[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.
[P] Data. (uses, distribution, wetland) from the USDA'a Plants 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]).

[11] Bean. W. Trees and Shrubs Hardy in Great Britain. Vol 1 - 4 and Supplement. Murray 1981
A classic with a wealth of information on the plants, but poor on pictures.

[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.

[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.

[78] Sheat. W. G. Propagation of Trees, Shrubs and Conifers. MacMillan and Co 1948
A bit dated but a good book on propagation techniques with specific details for a wide range of plants.

[82] Sargent. C. S. Manual of the Trees of N. America. Dover Publications Inc. New York. 1965 ISBN 0-486-20278-X
Two volumes, a comprehensive listing of N. American trees though a bit out of date now. Good details on habitats, some details on plant uses. Not really for the casual reader.

[84] Coyle. J. and Roberts. N. C. A Field Guide to the Common and Interesting Plants of Baja California. Natural History Publishing Co. 1975
A very readable pocket flora with good illustrations, it gives quite a few plant uses.

[92] Balls. E. K. Early Uses of Californian Plants. University of California Press 1975 ISBN 0-520-00072-2
A nice readable book.

[95] Saunders. C. F. Edible and Useful Wild Plants of the United States and Canada. Dover Publications 1976 ISBN 0-486-23310-3
Useful wild plants of America. A pocket guide.

[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.

[164] Bird. R. (Editor) Growing from Seed. Volume 4. Thompson and Morgan. 1990
Very readable magazine with lots of information on propagation. A good article on Yuccas, one on Sagebrush (Artemesia spp) and another on Chaerophyllum bulbosum.

[166] Taylor. J. The Milder Garden. Dent 1990
A good book on plants that you didn't know could be grown outdoors in Britain.

[182] Thomas. G. S. Ornamental Shrubs, Climbers and Bamboos. Murray 1992 ISBN 0-7195-5043-2
Contains a wide range of plants with a brief description, mainly of their ornamental value but also usually of cultivation details and varieties.

[187] Phillips. R. & Rix. M. Perennials Volumes 1 and 2. Pan Books 1991 ISBN 0-330-30936-9
Photographs of over 3,000 species and cultivars of ornamental plants together with brief cultivation notes, details of habitat etc.

[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.

[222] Foster. S. & Duke. J. A. A Field Guide to Medicinal Plants. Eastern and Central N. America. Houghton Mifflin Co. 1990 ISBN 0395467225
A concise book dealing with almost 500 species. A line drawing of each plant is included plus colour photographs of about 100 species. Very good as a field guide, it only gives brief details about the plants medicinal properties.

[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.

[245] Genders. R. Scented Flora of the World. Robert Hale. London. 1994 ISBN 0-7090-5440-8
An excellent, comprehensive book on scented plants giving a few other plant uses and brief cultivation details. There are no illustrations.

[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.

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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.
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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.