Yucca angustissima
Engelm. ex Trel.
Asparagaceae
Yucca kanabensis McKelvey and Yucca toftiae S.L.Welsh are sometimes treated as distinct. However, there is significant intergradation among these taxa, which makes their recognition at varietal rank seem most appropriate[
270- Title
- Flora of N. America
- Publication
-
- Author
-
- Website
- http://flora.huh.harvard.edu/fna/
- Publisher
-
- Year
- 0
- ISBN
-
- Description
- An on-line version of the flora with an excellent description of the plant including a brief mention of plant uses.
].
Yucca kanabensis McKelvey
Yucca toftiae S.L.Welsh
Common Name:
General Information
Yucca angustissima is an evergreen shrub producing a rosette of spear-shaped leaves 20 - 80cm long (exceptionally to 150cm) and 4 - 20mm wide growing from a procumbent stem 10 - 40cm long or, less commonly, from an erect stem 100 - 200cm long. The plant can produce a solitary rosette, or can form small to large colonies of rosettes[
270- Title
- Flora of N. America
- Publication
-
- Author
-
- Website
- http://flora.huh.harvard.edu/fna/
- Publisher
-
- Year
- 0
- ISBN
-
- Description
- An on-line version of the flora with an excellent description of the plant including a brief mention of plant uses.
].
The plant is harvested from the wild for local use as a food and source of materials. The roots of Yucca species are rich in saponins and have a wide range of applications. The plant is grown as an ornamental in gardens.
Known Hazards
The roots contain saponins[
222- Title
- A Field Guide to Medicinal Plants. Eastern and Central N. America.
- Publication
-
- Author
- Foster. S. & Duke. J. A.
- Publisher
- Houghton Mifflin Co.
- Year
- 1990
- ISBN
- 0-395-46722-5
- Description
- 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.
].
Although poisonous, saponins also have a range of medicinal applications and many saponin-rich plants are used in herbalism (particularly as emetics, expectorants and febrifuges) or as sources of raw materials for the pharmaceutical industry. Saponins are also found in a number of common foods, such as many beans.
Saponins have a quite bitter flavour and are in general poorly absorbed by the human body, so most pass through without harm. They can be removed by carefully leaching in running water. Thorough cooking, and perhaps changing the cooking water once, will also normally remove most of them. However, it is not advisable to eat large quantities of raw foods that contain saponins.
Saponins are much more toxic to many cold-blooded 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 and make them easy to catch[
K- Title
- Plants for a Future
- Author
- Ken Fern
- Description
- Notes from observations, tasting etc at Plants For A Future and on field trips.
].
Botanical References
11- Title
- Trees and Shrubs Hardy in Great Britain. Vol 1 - 4 and Supplement.
- Publication
-
- Author
- Bean. W.
- Publisher
- Murray
- Year
- 1981
- ISBN
- -
- Description
- A classic with a wealth of information on the plants, but poor on pictures.
,
200- Title
- The New RHS Dictionary of Gardening. 1992.
- Publication
-
- Author
- Huxley. A.
- Publisher
- MacMillan Press
- Year
- 1992
- ISBN
- 0-333-47494-5
- Description
- Excellent and very comprehensive, though it contains a number of silly mistakes. Readable yet also very detailed.
,
270- Title
- Flora of N. America
- Publication
-
- Author
-
- Website
- http://flora.huh.harvard.edu/fna/
- Publisher
-
- Year
- 0
- ISBN
-
- Description
- An on-line version of the flora with an excellent description of the plant including a brief mention of plant uses.
Range
South-western N. America - Utah, Arizona, New Mexico.
Habitat
Sandy places, sandstone outcrops, rocky hillsides of deserts at elevations of 900 - 2200 metres in Arizona, New Mexico and Utah[
270- Title
- Flora of N. America
- Publication
-
- Author
-
- Website
- http://flora.huh.harvard.edu/fna/
- Publisher
-
- Year
- 0
- ISBN
-
- Description
- An on-line version of the flora with an excellent description of the plant including a brief mention of plant uses.
].
Properties
Edibility Rating | |
Habit | Evergreen Shrub |
Height | 0.40 m |
Growth Rate | Slow |
Pollinators | Hand |
Cultivation Status | Ornamental, Wild |
Cultivation Details
Yucca angustissima is a plant of semi-arid regions of southwestern N. America. It can tolerate temperatures down to about -10°c if in a suitable location, but is very intolerant of winter wet[
11- Title
- Trees and Shrubs Hardy in Great Britain. Vol 1 - 4 and Supplement.
- Publication
-
- Author
- Bean. W.
- Publisher
- Murray
- Year
- 1981
- ISBN
- -
- Description
- A classic with a wealth of information on the plants, but poor on pictures.
,
200- Title
- The New RHS Dictionary of Gardening. 1992.
- Publication
-
- Author
- Huxley. A.
- Publisher
- MacMillan Press
- Year
- 1992
- ISBN
- 0-333-47494-5
- Description
- Excellent and very comprehensive, though it contains a number of silly mistakes. Readable yet also very detailed.
].
Thrives in any soil but prefers a sandy loam and full exposure to the south[
11- Title
- Trees and Shrubs Hardy in Great Britain. Vol 1 - 4 and Supplement.
- Publication
-
- Author
- Bean. W.
- Publisher
- Murray
- Year
- 1981
- ISBN
- -
- Description
- A classic with a wealth of information on the plants, but poor on pictures.
]. Plants can succeed in light shade[
K- Title
- Plants for a Future
- Author
- Ken Fern
- Description
- Notes from observations, tasting etc at Plants For A Future and on field trips.
]. They are hardier when grown on poor sandy soils[
200- Title
- The New RHS Dictionary of Gardening. 1992.
- Publication
-
- Author
- Huxley. A.
- Publisher
- MacMillan Press
- Year
- 1992
- ISBN
- 0-333-47494-5
- Description
- Excellent and very comprehensive, though it contains a number of silly mistakes. Readable yet also very detailed.
]. Established plants are very drought resistant, this species is also tolerant of damp weather[
11- Title
- Trees and Shrubs Hardy in Great Britain. Vol 1 - 4 and Supplement.
- Publication
-
- Author
- Bean. W.
- Publisher
- Murray
- Year
- 1981
- ISBN
- -
- Description
- A classic with a wealth of information on the plants, but poor on pictures.
].
Closely allied to Yucca glauca[
11- Title
- Trees and Shrubs Hardy in Great Britain. Vol 1 - 4 and Supplement.
- Publication
-
- Author
- Bean. W.
- Publisher
- Murray
- Year
- 1981
- ISBN
- -
- Description
- A classic with a wealth of information on the plants, but poor on pictures.
].
The plant has a thick prostrate rootstock[
11- Title
- Trees and Shrubs Hardy in Great Britain. Vol 1 - 4 and Supplement.
- Publication
-
- Author
- Bean. W.
- Publisher
- Murray
- Year
- 1981
- ISBN
- -
- Description
- A classic with a wealth of information on the plants, but poor on pictures.
].
Yuccas are pollinated by small, white Yucca moths (Tegeticula yucasella and related species) with which they have a special plant-insect mutualism. At night, the fragrant flowers attract the female moth that feeds on the nectar. She then rolls pollen from the flowers into a ball that is three times the size of her head and carries the pollen ball to the next flower. There, she first lays eggs inside the immature ovary and then deposits the pollen on the flower’s stigma ensuring that seeds will form to feed her progeny. Because the larvae mature before they are able to consume all of
the seeds (60 to 80% of the seeds remain viable), the plants are able to reproduce as well[
277- Title
- Plants Database
- Publication
-
- Author
-
- Website
- http://plants.usda.gov/java/factSheet
- Publisher
- United States Department of Agriculture
- Year
- 0
- ISBN
-
- Description
- An online database with an excellent collection of fact sheets about native N. American plants.
]. In regions where the moth cannot live and, if fruit and seed are required, then hand pollination is necessary[
200- Title
- The New RHS Dictionary of Gardening. 1992.
- Publication
-
- Author
- Huxley. A.
- Publisher
- MacMillan Press
- Year
- 1992
- ISBN
- 0-333-47494-5
- Description
- Excellent and very comprehensive, though it contains a number of silly mistakes. Readable yet also very detailed.
]. This can be quite easily and successfully done using something like a small paint brush.
Individual crowns are monocarpic, dying after flowering[
233- Title
- Perennial Garden Plants
- Publication
-
- Author
- Thomas. G. S.
- Publisher
- J. M. Dent & Sons, London.
- Year
- 1990
- ISBN
- 0 460 86048 8
- Description
- A concise guide to a wide range of perennials. Lots of cultivation guides, very little on plant uses.
]. However, the crown will usually produce a number of sideshoots before it dies and these will grow on to flower in later years[
233- Title
- Perennial Garden Plants
- Publication
-
- Author
- Thomas. G. S.
- Publisher
- J. M. Dent & Sons, London.
- Year
- 1990
- ISBN
- 0 460 86048 8
- Description
- A concise guide to a wide range of perennials. Lots of cultivation guides, very little on plant uses.
].
Plants in this genus are notably resistant to honey fungus[
200- Title
- The New RHS Dictionary of Gardening. 1992.
- Publication
-
- Author
- Huxley. A.
- Publisher
- MacMillan Press
- Year
- 1992
- ISBN
- 0-333-47494-5
- Description
- Excellent and very comprehensive, though it contains a number of silly mistakes. Readable yet also very detailed.
].
Members of this genus seem to be immune to the predations of rabbits[
233- Title
- Perennial Garden Plants
- Publication
-
- Author
- Thomas. G. S.
- Publisher
- J. M. Dent & Sons, London.
- Year
- 1990
- ISBN
- 0 460 86048 8
- Description
- A concise guide to a wide range of perennials. Lots of cultivation guides, very little on plant uses.
]
Edible Uses
Fruit - the immature fruit is cooked[
85- Title
- Edible Native Plants of the Rocky Mountains.
- Publication
-
- Author
- Harrington. H. D.
- Publisher
- University of New Mexico Press
- Year
- 1967
- ISBN
- 0-8623-0343-9
- Description
- A superb book. Very readable, it gives the results of the authors experiments with native edible plants.
]. Baked in an oven[
216- Title
- Ethnobotany of the Hopi
- Publication
-
- Author
- Whiting. A. F.
- Publisher
- North Arizona Society of Science and Art
- Year
- 1939
- ISBN
- -
- Description
- A very good guide the the plant uses of the N. American Hopi Indians.
]. A bitter taste, the bitterness is in the skin[
85- Title
- Edible Native Plants of the Rocky Mountains.
- Publication
-
- Author
- Harrington. H. D.
- Publisher
- University of New Mexico Press
- Year
- 1967
- ISBN
- 0-8623-0343-9
- Description
- A superb book. Very readable, it gives the results of the authors experiments with native edible plants.
]. The fruit is 35 - 75mm long and 20 - 30mm wide[
270- Title
- Flora of N. America
- Publication
-
- Author
-
- Website
- http://flora.huh.harvard.edu/fna/
- Publisher
-
- Year
- 0
- ISBN
-
- Description
- An on-line version of the flora with an excellent description of the plant including a brief mention of plant uses.
].
Flowers - raw or cooked. They are delicious raw, or can be dried, crushed and used as a flavouring[
85- Title
- Edible Native Plants of the Rocky Mountains.
- Publication
-
- Author
- Harrington. H. D.
- Publisher
- University of New Mexico Press
- Year
- 1967
- ISBN
- 0-8623-0343-9
- Description
- A superb book. Very readable, it gives the results of the authors experiments with native edible plants.
].
Flowering stem - peeled, cooked and used like asparagus. The whitish inner portion is used[
85- Title
- Edible Native Plants of the Rocky Mountains.
- Publication
-
- Author
- Harrington. H. D.
- Publisher
- University of New Mexico Press
- Year
- 1967
- ISBN
- 0-8623-0343-9
- Description
- A superb book. Very readable, it gives the results of the authors experiments with native edible plants.
].
Medicinal
The roots are antiinflammatory, antitumor, antiviral[
1124- Title
- Yucca
- Publication
- Natural Medicines Comprehensive Database
- Author
-
- Website
- http://www.naturaldatabase.com/
- Publisher
-
- Year
- 2007
- ISBN
-
- Description
- A very comprehensive database of herbs, minerals and other natural products taken to promote health
].
The roots of Yucca species are rich in saponins and medicinally active compounds. The roots, harvested when the plant is not in flower, are used to make a health-promoting drink. It has been shown to lower cholesterol and triglyceride levels in the blood, to lower blood pressure and to reduce symptoms of osteoarthritis such as pain, swelling and stiffness. Yucca schidigera seems to be the species most often quoted, though all species contain the saponins[
1123- Title
- Yuccas of the Southwest
- Publication
- Agriculture Monograph No. 17
- Author
- Webber J.M.
- Publisher
- USDA
- Year
- 1953
- ISBN
-
- Description
- Rather dated, but very detailed information on the various species and their uses
,
1124- Title
- Yucca
- Publication
- Natural Medicines Comprehensive Database
- Author
-
- Website
- http://www.naturaldatabase.com/
- Publisher
-
- Year
- 2007
- ISBN
-
- Description
- A very comprehensive database of herbs, minerals and other natural products taken to promote health
].
Taken orally, the root is used in the treatment of osteoarthritis, hypertension, migraine headaches, colitis, stomach disorders, hypercholesterolemia, diabetes, poor circulation, and liver and gallbladder disorders[
1124- Title
- Yucca
- Publication
- Natural Medicines Comprehensive Database
- Author
-
- Website
- http://www.naturaldatabase.com/
- Publisher
-
- Year
- 2007
- ISBN
-
- Description
- A very comprehensive database of herbs, minerals and other natural products taken to promote health
].
Applied topically, it is used to treat sores, skin diseases, inflammation, bleeding, sprains, broken limbs, joint pain, baldness, and dandruff[
1124- Title
- Yucca
- Publication
- Natural Medicines Comprehensive Database
- Author
-
- Website
- http://www.naturaldatabase.com/
- Publisher
-
- Year
- 2007
- ISBN
-
- Description
- A very comprehensive database of herbs, minerals and other natural products taken to promote health
].
Many compounds from yucca have been used in the synthesis of new drugs[
1124- Title
- Yucca
- Publication
- Natural Medicines Comprehensive Database
- Author
-
- Website
- http://www.naturaldatabase.com/
- Publisher
-
- Year
- 2007
- ISBN
-
- Description
- A very comprehensive database of herbs, minerals and other natural products taken to promote health
].
Other Uses
A fibre obtained from the leaves is used for making ropes, baskets and mats[
85- Title
- Edible Native Plants of the Rocky Mountains.
- Publication
-
- Author
- Harrington. H. D.
- Publisher
- University of New Mexico Press
- Year
- 1967
- ISBN
- 0-8623-0343-9
- Description
- A superb book. Very readable, it gives the results of the authors experiments with native edible plants.
].
The leaves are very fibrous and can be used as paint brushes[
92- Title
- Early Uses of Californian Plants.
- Publication
-
- Author
- Balls. E. K.
- Publisher
- University of California Press
- Year
- 1975
- ISBN
- 0-520-00072-2
- Description
- A nice readable book.
] or as a broom or woven to make mats etc[
85- Title
- Edible Native Plants of the Rocky Mountains.
- Publication
-
- Author
- Harrington. H. D.
- Publisher
- University of New Mexico Press
- Year
- 1967
- ISBN
- 0-8623-0343-9
- Description
- A superb book. Very readable, it gives the results of the authors experiments with native edible plants.
]. They are also used in basketry[
216- Title
- Ethnobotany of the Hopi
- Publication
-
- Author
- Whiting. A. F.
- Publisher
- North Arizona Society of Science and Art
- Year
- 1939
- ISBN
- -
- Description
- A very good guide the the plant uses of the N. American Hopi Indians.
].
The roots are rich in saponins and can be used as a soap substitute[
85- Title
- Edible Native Plants of the Rocky Mountains.
- Publication
-
- Author
- Harrington. H. D.
- Publisher
- University of New Mexico Press
- Year
- 1967
- ISBN
- 0-8623-0343-9
- Description
- A superb book. Very readable, it gives the results of the authors experiments with native edible plants.
,
216- Title
- Ethnobotany of the Hopi
- Publication
-
- Author
- Whiting. A. F.
- Publisher
- North Arizona Society of Science and Art
- Year
- 1939
- ISBN
- -
- Description
- A very good guide the the plant uses of the N. American Hopi Indians.
].
The juice of the plant has a wide variety of uses. In agriculture it is used as a base in liquid fertilizers where its ability to reduce surface tension of irrigation water greatly assists penetration in heavy soils; it assists in soil flocculation to a marked degree; it serves as a carrying agent for the plant-food chemicals[
1123- Title
- Yuccas of the Southwest
- Publication
- Agriculture Monograph No. 17
- Author
- Webber J.M.
- Publisher
- USDA
- Year
- 1953
- ISBN
-
- Description
- Rather dated, but very detailed information on the various species and their uses
]. The yucca extract itself is rich in the vital minor elements including boron, iron, magnesium, manganese, copper and zinc[
1123- Title
- Yuccas of the Southwest
- Publication
- Agriculture Monograph No. 17
- Author
- Webber J.M.
- Publisher
- USDA
- Year
- 1953
- ISBN
-
- Description
- Rather dated, but very detailed information on the various species and their uses
].
The juice is said to be widely used as a carbon dioxide stabilizer in the control of oil fires, and saponin from yucca is considered a good base for soaps, shampoos, cleansing powders, and tooth pastes and powders[
1123- Title
- Yuccas of the Southwest
- Publication
- Agriculture Monograph No. 17
- Author
- Webber J.M.
- Publisher
- USDA
- Year
- 1953
- ISBN
-
- Description
- Rather dated, but very detailed information on the various species and their uses
].
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- Title
- Plants for a Future
- Author
- Ken Fern
- Description
- Notes from observations, tasting etc at Plants For A Future and on field trips.
]. Seed is not produced in Britain unless the flowers are hand pollinated.
Root cuttings in late winter or early spring. Lift in mid spring 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- Title
- Propagation of Trees, Shrubs and Conifers.
- Publication
-
- Author
- Sheat. W. G.
- Publisher
- MacMillan and Co
- Year
- 1948
- ISBN
- -
- Description
- A bit dated but a good book on propagation techniques with specific details for a wide range of plants.
].