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Useful Temperate Plants

Amorpha nana

Nutt.

Fabaceae

+ Synonyms

Amorpha microphylla Pursh

Amorpha punctata Raf.

Common Name: Dwarf Indigobush

Amorpha nana
Drawing of a flowering stem
Photograph by: Curtis’s Botanical Magazine, vol. 47: t. 2112 (1820) [J. Curtis]
Creative Commons License
Amorpha nana Amorpha nana Amorpha nana

General Information

Amorpha nana is an erect shrub producing a cluster of stems 30 - 60cm tall, exceptionally to 90cm, from a rhizomatous rootstock.
The plant is harvesed from the wild for local use as a medicine and source of a pesticide. It is sometimes planted in soil stabilization projects.

Known Hazards

None known

Botanical References

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.
,
204
Title
Flora of Canada
Publication
 
Author
Livingstone. B.
Publisher
National Museums of Canada
Year
1978
ISBN
0-660-00025-3
Description
In 4 volumes, it does not deal with plant uses but gives descriptions and habitats.

Range

Central N. America - Saskatchewan to Manitoba, south to New Mexico and Kansas

Habitat

Dry prairies in S. Manitoba[
204
Title
Flora of Canada
Publication
 
Author
Livingstone. B.
Publisher
National Museums of Canada
Year
1978
ISBN
0-660-00025-3
Description
In 4 volumes, it does not deal with plant uses but gives descriptions and habitats.
]. Prairies, hillsides, plains and buttes.

Properties

Medicinal Rating *  *
Other Uses Rating *  *
HabitDeciduous Shrub
Height0.60 m
PollinatorsInsects
Cultivation StatusWild

Cultivation Details

A very hardy plant, tolerating temperatures down to about -25c[
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.
].
Prefers a light well-drained sandy soil in sun or light shade[
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.
]. Fairly wind-resistant[
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.
].
Plants resent root disturbance, they should be planted out into their final positions whilst small[
133
Title
Growing from Seed. Volume 1.
Publication
 
Author
Rice. G. (Editor)
Publisher
Thompson and Morgan.
Year
1987
ISBN
-
Description
Very readable magazine with lots of information on propagation.
].
Plants are said to be immune to insect pests[
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.
].
Flowers are produced on the current season's growth[
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 species has a symbiotic relationship with certain soil bacteria, these bacteria form nodules on the roots and fix atmospheric nitrogen. Some of this nitrogen is utilized by the growing plant but some can also be used by other plants growing nearby[
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.
].

Edible Uses

None known

Medicinal

The plant has been used as a snuff in the treatment of catarrh[
257
Title
Native American Ethnobotany
Publication
 
Author
Moerman. D.
Publisher
Timber Press. Oregon.
Year
1998
ISBN
0-88192-453-9
Description
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.
].

Agroforestry Uses:

The plant has a strong spreading root system and this makes it useful for controlling soil erosion[
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.
].

Other Uses

The resinous pustules on some species yield the insecticide 'amorpha'[
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.
].

Propagation

Seed - presoak for 12 hours in warm water and sow early spring in a greenhouse[
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.
,
133
Title
Growing from Seed. Volume 1.
Publication
 
Author
Rice. G. (Editor)
Publisher
Thompson and Morgan.
Year
1987
ISBN
-
Description
Very readable magazine with lots of information on propagation.
]. The seed usually germinates in 1 - 2 months at 20°c[
133
Title
Growing from Seed. Volume 1.
Publication
 
Author
Rice. G. (Editor)
Publisher
Thompson and Morgan.
Year
1987
ISBN
-
Description
Very readable magazine with lots of information on propagation.
]. When large enough to handle, prick the seedlings out into individual pots and grow them on in the greenhouse for their first winter. Plant them out in late spring or early summer, after the last expected frosts.
Cuttings of half-ripe wood, early summer/July in a frame. High percentage[
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.
].
Cuttings of mature wood of the current seasons growth, autumn, in a sheltered position outdoors. Takes 12 months[
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.
].
Suckers in spring just before new growth begins[
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.
].
Layering in spring .
Cite as: Temperate Plants Database, Ken Fern. temperate.theferns.info. 2019-09-16. <temperate.theferns.info/plant/Amorpha+nana>

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