Osage Orange Tree - Maclura pomifera
Moraceae -- Mulberry family
Osage-orange heartwood is the most decay-resistant of all North American timbers and is immune to termites. Osage-orange produces no sawtimber, pulpwood, or utility poles, but it has been planted in greater numbers than almost any other tree species in North America. 
 

Osage-orange produces no sawtimber, pulpwood, or utility poles, but it has been planted in greater numbers than almost any other tree species in North America. Known also as hedge, hedge-apple, bodark, bois-d'arc, bowwood, and naranjo chino, it made agricultural settlement of the prairies possible (though not profitable), led directly to the invention of barbed wire, and then provided most of the posts for the wire that fenced the West. The heartwood, bark, and roots contain many extractives of actual and potential value in food processing, pesticide manufacturing, and dyemaking. Osage-orange is used in landscape design, being picturesque rather than beautiful, and possessing strong form, texture, and character.

The natural range of Osage-orange is in the Red River drainage of Oklahoma, Texas, and Arkansas; and in the Blackland Prairies, Post Oak Savannas, and Chisos Mountains of Texas. According to some authors the original range included most of eastern Oklahoma, portions of Missouri, and perhaps northwestern Louisiana. Osage-orange has been planted as a hedge in all the 48 contiguous States and in southeastern Canada. The commercial range includes most of the country east of the Rocky Mountains, south of the Platte River and the Great Lakes, excluding the Appalachian Mountains.


Oh, those wicked thorns.. they kept the cows out of the apple orchard, all right.

 

although Osage-orange is one of the hetitlehiest tree species in North America, it is attacked by some parasites. Cotton root rot, caused by Phymatotrichum omnivorum, attacks Osage-orange and most other windbreak species in Texas, Oklahoma, and Arizona (59). Losses are greatest in plantings on dry soil where rainfall is scant. Cotton root rot is the only serious disease.

Osage-orange trees are attacked by at least four stem borers: the mulberry borers (Doraschema wildii and D. titleernatum), the painted hickory borer (Megacyllene caryae), and the redshouldered hickory borer (Xylobiops basilaris). The twigs are parasitized by several scale insects including the European fruit lecanium (Parthenolecanium corni), the walnut scale (Quadraspidiotus juglansregiae) the cottony maple scale (Pulvinaria innumerabilis) the terrapin scale (Mesolecanium nigrofasciatum), and the San Jose scale (Quadraspidiotus perniciosus) (25,46). The fruit-tree leafroller (Archips argyrospilus) feeds on opening buds and unfolding leaves. Osage-orange is attacked by, but is not a principal host of, the fall webworm (Hyphantria cunea) (55), an Eriophyid mite, Tegolophus spongiosus, and the fourspotted spider mite, Tetranychus canadensis. Osage-orange trees and several other species in 1 to 5-year-old plantations on old fields in the prairie region of Illinois were partially or completely girdled by mice. Severity of damage was greatest where weeds were most abundant.
The outer layer of sapwood is very thin; consequently, even small-diameter stems give long service as stakes and posts (40,43). About 3 million posts were sold annually in Kansas during the early 1970's. The branch wood was used by the Osage Indians for making bows and is still recommended by some archers today. The chemical properties of the fruit, seed, roots, bark, and wood may be more important than the structural qualities of the wood. A number of extractives have been identified by researchers, but they have not yet been employed by industry.

Numerous organic compounds have also been obtained from various parts of the tree. An antifungal agent and a nontoxic antibiotic useful as a food preservative have been extracted from the heartwood. Osage-orange in prairie regions provides valuable cover and nesting sites for quail, pheasant, other birds, and animals, but the bitter-tasting fruit is little eaten by wildlife. Reports that fruit causes the death of livestock have been proven wrong by feeding experiments in several States.

(USDA / Forest Service Agriculture Handbook 654, Silvics of Forest Trees of the United States, 1965, revised: December 1990)
 

 
 

  

              
 
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