(Acacia angustissima var. texensis)
Prairie acacia is a warm season perennial legume found in South Texas. It occurs on a variety of soil types from heavy clays of Eastern South Texas to red sandy loams of the Central Rio Grande Plain. Remnant stands still remain common on the latter. Large stands of prairie acacia are present only in areas that are protected from livestock grazing. It grows in colonies, wherein the majority of reproduction is facilitated by rhizomes. Prairie acacia is considered excellent forage for livestock and wildlife, and the seeds are known to be eaten by granivorous birds. Generally, flowers and seed are produced following rainfall in the spring through late fall in South Texas. The seed matures approximately 60 days after flowering. Prairie acacia can also be easily grown from stem and root cuttings. Stem cuttings should be collected from vigorous plants and placed immediately on ice or in water (wilting will occur rapidly). Cuttings should be coated in rooting hormone and placed in a firm, well watered potting mixture or soil. Root cuttings can be taken by pulling or digging existing stems and rhizomes from the soil.