Sophora affinis, commonly known as Eve's Necklace, is a deciduous shrub or small tree native to the south-central United States. This species is recognized for its graceful form and attractive flowering display, making it a notable component of its native ecosystems and a plant of horticultural interest. Physically, Sophora affinis typically grows to a height of 10 to 20 feet, occasionally reaching up to 30 feet, with a spread that is often as wide as its height. Its growth habit is generally upright and somewhat spreading, forming an open canopy. The leaves are pinnately compound, meaning they are arranged along a central stem, with each leaf typically bearing 7 to 15 leaflets. These leaflets are oval to oblong in shape, smooth-edged, and a medium green color. The bark is smooth and gray on younger stems, becoming rougher and fissured with age. The most striking feature of Sophora affinis is its flowers, which appear in late spring to early summer. They are borne in drooping clusters, or racemes, and are pea-like in structure, characteristic of the Fabaceae family. The individual flowers are a pale to bright pink or rose color, with a prominent keel, wings, and standard petal. Following flowering, the plant produces seed pods that are distinctive and give rise to its common name. These pods are constricted between the seeds, resembling a string of beads or a necklace. The seeds themselves are small, hard, and typically brown. The native range of Sophora affinis extends across parts of Texas, Oklahoma, Arkansas, and Louisiana. It thrives in a variety of natural habitats, often found in woodlands, savannas, along stream banks, and on rocky slopes. It prefers well-drained soils and can tolerate a range of soil types, from sandy to loamy. While it can grow in partial shade, it flowers best and exhibits its most robust growth in full sun. Cultivation requirements are generally straightforward; it is a relatively drought-tolerant once established and can withstand moderate heat. It is hardy in USDA Plant Hardiness Zones 7 through 10. Ecologically, Sophora affinis plays a role in supporting local wildlife. Its flowers provide nectar for pollinators, and its seeds may be consumed by some birds. While not widely cultivated for specific economic or medicinal purposes, its ornamental value is significant. The unique necklace-like seed pods and the delicate pink flowers make it an attractive specimen plant for gardens, particularly in its native regions. Its ability to adapt to various conditions and its relatively low maintenance needs contribute to its appeal as a landscape plant. Interesting adaptations include its ability to fix nitrogen in the soil, a common trait among legumes, which can benefit surrounding vegetation. The hard seed coat is also a characteristic that aids in seed survival and dispersal.