Astragalus crotalariae
(Benth.) A.Gray
Fabaceae
Astragalus limatus E.Sheld.
Astragalus preussii A.Gray
Phaca crotalariae Benth.
Tragacantha crotalariae (Benth.) Kuntze
Common Name: Salton Milkvetch
General Information
Astragalus crotalariae is a bushy perennial plant
The plant is used as an indicator of selenium deposits and is also a hyperaccumulator that can potentially remove selenium from polluted soils.
Astragalus crotalariae is a perennial herb for which at present there are no major known threats causing a population decline, but it is generally recorded as rare in its natural range. The plant is classified as 'Least Concern' in the IUCN Red List of Threatened Species(2013)[
338- Title
- IUCN Red List of Threatened Species
- Publication
-
- Author
-
- Website
- http://www.iucnredlist.org/
- Publisher
-
- Year
- 0
- ISBN
-
- Description
- A list of plants under threat and facing possible extinction, usually with brief details of the threats and information on habitat.
].
Known Hazards
None known
Botanical References
Range
Southwestern N. America - California, Arizona, northern Mexico (Baja Norte)
Habitat
Sandy, gravelly areas in desert scrub, arid plains and washes, disturbed areas such as roadsides; at elevations from 60 - 250 metres[
338- Title
- IUCN Red List of Threatened Species
- Publication
-
- Author
-
- Website
- http://www.iucnredlist.org/
- Publisher
-
- Year
- 0
- ISBN
-
- Description
- A list of plants under threat and facing possible extinction, usually with brief details of the threats and information on habitat.
].
Properties
Conservation Status | Least Concern |
Other Uses Rating | |
Habit | Perennial |
Height | 0.00 m |
Pollinators | Insects |
Cultivation Status | Wild |
Cultivation Details
Astragalus crotalariae is native to arid and semi-arid regions of southwestern N. America where it is found at elevations below 250 metres. The summers are hot and the winters can bw very cold, with temperatures falling below freezing.
Requires a sunny position in a well-drained soil. Succeeds in poor soils.
Edible Uses
None known
Medicinal
None known
Agroforestry Uses:
Astragalus crotalariae is often found growing on selenium-rich soils and, when growing well, is believed to indicate the presence of selenium deposits. It has thus been used as an indicator plant of potential sites for mining selenium[
338- Title
- IUCN Red List of Threatened Species
- Publication
-
- Author
-
- Website
- http://www.iucnredlist.org/
- Publisher
-
- Year
- 0
- ISBN
-
- Description
- A list of plants under threat and facing possible extinction, usually with brief details of the threats and information on habitat.
,
1309- Title
- The Leguminosae; A Source Book of Characteristics, Uses and Nodulation
- Publication
-
- Author
- Allen O.N.; Allen E.K.
- Publisher
- University of Wisconsin
- Year
- 1981
- ISBN
- 0-333-32221-5
- Description
- An amazing and comprehensive work, giving a brief guide to the many genera of the family Fabaceae and also the principle uses of the genus.
].
The plant also accumulates high levels of selenium in its foliage and has potential for use in removing selenium from contaminated soil by cutting and removing the foliage on a regular basis. The selenium is potentially recoverable from the foliage[
338- Title
- IUCN Red List of Threatened Species
- Publication
-
- Author
-
- Website
- http://www.iucnredlist.org/
- Publisher
-
- Year
- 0
- ISBN
-
- Description
- A list of plants under threat and facing possible extinction, usually with brief details of the threats and information on habitat.
,
1309- Title
- The Leguminosae; A Source Book of Characteristics, Uses and Nodulation
- Publication
-
- Author
- Allen O.N.; Allen E.K.
- Publisher
- University of Wisconsin
- Year
- 1981
- ISBN
- 0-333-32221-5
- Description
- An amazing and comprehensive work, giving a brief guide to the many genera of the family Fabaceae and also the principle uses of the genus.
].
Other Uses
None known
Propagation
Seed - best sown as soon as it is ripe in a cold frame[
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.
]. A period of cold stratification may help stored seed to germinate[
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.
]. Stored seed, and perhaps also fresh seed, should be pre-soaked for 24 hours in hot water before sowing - but make sure that you do not cook the seed[
134- Title
- Growing from Seed. Volume 2.
- Publication
-
- Author
- Rice. G. (Editor)
- Publisher
- Thompson and Morgan.
- Year
- 1988
- ISBN
- -
- Description
- Very readable magazine with lots of information on propagation. An interesting article on Ensete ventricosum.
,
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.
]. Any seed that does not swell should be carefully pricked with a needle, taking care not to damage the embryo, and re-soaked for a further 24 hours[
134- Title
- Growing from Seed. Volume 2.
- Publication
-
- Author
- Rice. G. (Editor)
- Publisher
- Thompson and Morgan.
- Year
- 1988
- ISBN
- -
- Description
- Very readable magazine with lots of information on propagation. An interesting article on Ensete ventricosum.
,
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.
]. Germination can be slow and erratic but is usually within 4 - 9 weeks or more at 13°c if the seed is treated or sown fresh[
134- Title
- Growing from Seed. Volume 2.
- Publication
-
- Author
- Rice. G. (Editor)
- Publisher
- Thompson and Morgan.
- Year
- 1988
- ISBN
- -
- Description
- Very readable magazine with lots of information on propagation. An interesting article on Ensete ventricosum.
]. As soon as it is large enough to handle, prick the seedlings out into individual pots and grow them on in the greenhouse for their first winter, planting them out into their permanent positions in late spring or early summer, after the last expected frosts.
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