Leucaena esculenta
Leucaena esculenta
Safety & Hazards
None known
Cultivation Details
Guaje is a plant of the seasonally dry tropics, where it can be found at elevations from 400 - 2,000 metres. It grows in areas where the mean annual rainfall is within the range 800 - 1,300mm and can tolerate up to 7 months of dry season. Plants can tolerate occasional light frosts[1]. Found in the wild mainly on well-drained calcareous soils that are often shallow and rocky[2]. Established plants are moderately drought tolerant[1]. A fast-growing tree[2]. The unripe seedpods are harvested by climbing the trees and lopping the terminal branches or groups of pods, often crudely, with machetes, small knives or cutting poles. Annual pollarding in this way apparently causes only limited damage to the trees which resprout and fruit annually[1]. The tree is highly resistant to Psyllid damage[1]. This species is known to hybridize readily with Leucaena leucocephala glabrata where the two are brought together in cultivation[1]. 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 - the seedcoat of this species is relatively soft and seeds usually germinate fairly well without treatment. However, scarification can improve germination rates and can be carried out prior to sowing[1]. This can usually be done by pouring a small amount of nearly boiling water on the seeds (being careful not to cook them!) and then soaking them for 12 - 24 hours in warm water. By this time they should have imbibed moisture and swollen - if they have not, then carefully make a nick in the seedcoat (being careful not to damage the embryo) and soak for a further 12 hours before sowing. Because the seeds are quite large, seedlings usually grow away rapidly[1]. Cuttings of semi-ripe wood. Cite as: Tropical Plants Database, Ken Fern. tropical.theferns.info. 2026-02-20. <tropical.theferns.info/viewtropical.php?id=Leucaena+esculenta>
Pollinators
Insects
References
- [1]Leucaena A Genetic Resources Handbook — Hughes C.E. · Oxford Forestry Institute; Oxford, UK · 1998 · https://herbaria.plants.ox.ac.uk/bol/leucaena/ · ISBN 0 85074 145 9 ↩︎An excellent guide to the genus, giving detailed information on the various species
- [2]World Agroforesty Centre — http://www.worldagroforestry.org/ ↩︎An excellent online database of a huge range of trees giving very good information on each plant - its uses, ecology, identity, propagation, pests etc.
- [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]Trees and Shrubs of Mexico — Standley P.C. · Smithsonian Institution; Washington · 1926 ↩︎Although dated, it contains a wealth of information on the trees and shrubs of Mexico, including many of their uses. It can be downloaded from the Internet.
- [5]Dictionary of Economic Plants. — Uphof. J. C. Th. · Weinheim · 1959 · ISBN - ↩︎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.
- [6]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.
- [7]Cornucopia II — Facciola. S. · Kampong Publications, California. · 1998 · ISBN 0-9628087-2-5 ↩︎The second edition of an excellent guide to the edible uses of plants, though it does not give any details of cultivation etc.