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Fabaceae FAMILY Least Concern

Robinia neomexicana

Robinia neomexicana

Edibility
2/5
Medicinal
2/5

Safety & Hazards

The bark, root and seed are said to be poisonous[1]. The roots, leaves and bark contain robinin and are very poisonous.

Cultivation Details

HabitDeciduous Tree
Growth—

Robinia neomexicana occurs in semiarid continental climates with dry warm springs, hot moist summers, and cold moist winters[2]. When fully dormant, it can tolerate temperatures down to around -20°c[3]. Across its range, two major precipitation seasons exist, with 35 - 42% of precipitation falling as rain in July and August. Mean annual precipitation ranges from 380 - 760mm[2]. Succeeds in a hot dry position. Succeeds in any soil, preferring one that is not too rich[4, 3]. Plants are found on a wide variety of soils in the wild, ranging from clays to sandy loams derived from volcanic or limestone parent materials[2]. Requires a well-drained soil, succeeding on dry barren sites[3]. Plants are tolerant of drought and atmospheric pollution[3]. The branches are brittle and very liable to wind damage[3]. When plants are grown in rich soils they produce coarse and rank growth which is even more liable to wind damage[5, 3]. The tree's thin bark and moderate litter production probably make it susceptible to fire. Although top growth is liable to be killed, the tree usually regenerates from the base. In addition, the plant's succulent foliage during the summer decreases the severity of fires[2]. Plants can be coppiced[1]. Any pruning should be done in late summer in order to reduce the risk of bleeding[3]. Plants in this genus are notably resistant to honey fungus[3]. 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[3].

Propagation

Seed - pre-soak for 48 hours in warm water and sow the seed in late winter in a cold frame[6]. A short stratification improves germination rates and time[6]. Prick out the seedlings into individual pots when they are large enough to handle and grow them on in the greenhouse for their first winter. Plant them out into their permanent positions in the following summer. The seed stores for over 10 years[7]. Suckers taken during the dormant season. Cite as: Temperate Plants Database, Ken Fern. temperate.theferns.info. 2026-02-21. <temperate.theferns.info/plant/Robinia+neomexicana>

Pollinators

Insects

References

  1. [1]Flowers of the Southwest Mountains. — Arnberger. L. P. · Southwestern Monuments Ass. · 1968 · ISBN - ↩︎A lovely little pocket guide to wild plants in the southern Rockies of America.
  2. [2]Fire Effects Information System — http://www.feis-crs.org/feis/ ↩︎An on-line information site with comprehensive information on over 1,100 species of plant. Mainly developed to supply information on the effects of fire on plants and animals, it also contains a wealth of other information on the plants
  3. [3]The New RHS Dictionary of Gardening. 1992. — Huxley. A. · 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.
  4. [4]RHS Dictionary of Plants plus Supplement. 1956 — F. Chittendon. · Oxford University Press · 1951 · ISBN - ↩︎Comprehensive listing of species and how to grow them. Somewhat outdated, it has been replaced in 1992 by a new dictionary (see [ 200 ]).
  5. [5]Trees and Shrubs Hardy in Great Britain. Vol 1 - 4 and Supplement. — Bean. W. · Murray · 1981 · ISBN - ↩︎A classic with a wealth of information on the plants, but poor on pictures.
  6. [6]Hardy Woody Plants from Seed. — McMillan-Browse. P. · Grower Books · 1985 · ISBN 0-901361-21-6 ↩︎Does not deal with many species but it is very comprehensive on those that it does cover. Not for casual reading.
  7. [7]The Reference Manual of Woody Plant Propagation. — Dirr. M. A. and Heuser. M. W. · Athens Ga. Varsity Press · 1987 · ISBN 0942375009 ↩︎A very detailed book on propagating trees. Not for the casual reader.
  8. [8]IUCN Red List of Threatened Species — http://www.iucnredlist.org/ ↩︎A list of plants under threat and facing possible extinction, usually with brief details of the threats and information on habitat.
  9. [9]A Guide to Medicinal Plants in North Africa — IUCN; Malaga, Spain · 2005 · ISBN 2-8317-0893-1 ↩︎A guide to over 100 species of medicinal herbs in N. Africa.
  10. [10]Tanaka's Cyclopedia of Edible Plants of the World. — Tanaka. T. & Nakao S. · Keigaku Publishing; Tokyo · 1976 · ISBN - ↩︎The most comprehensive list of 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.
  11. [11]Food Plants of the N. American Indians. — Yanovsky. E. · U.S. Depf of Agriculture. · ISBN - ↩︎A comprehensive but very terse guide. Not for the casual reader.
  12. [12]Cornucopia - A Source Book of Edible Plants. — Facciola. S. · Kampong Publications · 1990 · ISBN 0-9628087-0-9 ↩︎Excellent. Contains a very wide range of conventional and unconventional food plants (including tropical) and where they can be obtained (mainly N. American nurseries but also research institutes and a lot of other nurseries from around the world.
  13. [13]Native American Ethnobotany — Moerman. D. · 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.
  14. [14]The Complete Trees of N. America. Field Guide and Natural History. — Elias. T. · Van Nostrand Reinhold Co. · 1980 · ISBN 0442238622 ↩︎A very good concise guide. Gives habitats, good descriptions, maps showing distribution and a few of the uses. It also includes the many shrubs that occasionally reach tree proportions.
  15. [15]Trees of Central Texas. — Vines. R. A. · University of Texas Press · 1987 · ISBN 0-292-78958-3 ↩︎A good concise guide, it gives details of habitats and some of the uses of trees growing in Texas.
  16. [16]Ethnobotany of the Hopi — Whiting. A. F. · North Arizona Society of Science and Art · 1939 · ISBN - ↩︎A very good guide the the plant uses of the N. American Hopi Indians.
  17. [17]The Woods of the United States — Sargent C.S. · D. Appleton & Co.; New York · 1885 · http://www.biodiversitylibrary.org ↩︎Contains information on the woods of a large number of N. American species of trees and shrubs. It can be downloaded from the Internet.
  18. [PFAF]Plants for a Future — pfaf.org ↩︎