Cross Vine

Plant cross vine in spring or autumn in well-drained soil in full sun to partial shade. This native evergreen vine climbs by tendrils with adhesive discs and is less aggressive than its relative trumpet vine, making it more suitable for residential gardens. It reaches twenty to thirty feet and can cover walls, fences, and arbors with attractive foliage that turns purplish-bronze in winter.

Water regularly during the first two growing seasons to establish a deep root system. Once established, cross vine is moderately drought tolerant and performs well with minimal supplemental watering. The clusters of trumpet-shaped flowers appear in mid to late spring on the previous year's wood and are a major nectar source for hummingbirds and butterflies.

Prune immediately after flowering to control shape and size without sacrificing next year's bloom. Cross vine flowers primarily on old wood, so late-season pruning will reduce the spring flower display. In cold winters at the edge of its hardiness range, the foliage may be damaged but the roots typically survive and regenerate. The common name comes from the distinctive cross-shaped pattern visible when the stem is cut in cross-section.

Cross-vine (Bignonia capreolata) is a vigorous woody vine native to the southeastern and south-central United States, ranging from Maryland and Virginia south through Florida and west to Texas and Missouri. It thrives in the rich alluvial soils of river bottomlands, moist woodlands, and forest margins, where it can be found climbing to the tops of tall hardwoods using its distinctive disc-tipped tendrils. The species was first formally described by Linnaeus in 1753, placed in the genus Bignonia, which honors Abbé Jean-Paul Bignon, an eighteenth-century French librarian and patron of botany. For many decades, cross-vine was the sole North American representative remaining in the genus Bignonia, as other species were reclassified into separate genera. Indigenous peoples of the southeastern woodlands were well acquainted with this vine long before European botanists arrived. The Cherokee and other groups used preparations of the bark and roots as traditional remedies, and the tough, flexible stems found use in weaving and cordage. European settlers and early American gardeners recognized the ornamental potential of cross-vine by the mid-1800s, particularly for covering arbors, fences, and walls. However, it was not until the late twentieth century that targeted cultivar selection elevated the plant's popularity in the nursery trade. Notable selections including 'Tangerine Beauty,' developed by renowned horticulturist Michael Dirr at the University of Georgia, brought improved flower color and garden performance to the market. Today, cross-vine is valued both as a wildlife plant and a low-maintenance ornamental vine well suited to naturalistic and pollinator-friendly garden designs across USDA hardiness zones 6 through 9.

Cross vine adapts to a range of soils from sandy loam to clay with a pH of 5.5 to 7.0. It performs best in moist, fertile, well-drained soil but tolerates average conditions once established. Apply a balanced slow-release fertilizer in early spring. Mulch around the base with organic material to conserve moisture and suppress weeds. Avoid excessive nitrogen which promotes foliage growth at the expense of flowers.

Cut cross vine flower clusters for spring arrangements when the first trumpets have opened and buds are still developing. The orange-red flowers create eye-catching bouquets mixed with spring foliage and other flowers. Stems last about five days in water. The evergreen foliage can be cut year-round for greenery in arrangements, with the bronze-purple winter color being particularly attractive for holiday decorating.

Cross vine is a hardy perennial vine requiring no special storage. Propagate by semi-ripe cuttings in midsummer, which root reliably in four to six weeks with rooting hormone and bottom heat. Layering is also effective by pinning down a low stem and covering with soil. Seeds can be collected from the long, slender pods in autumn and sown in spring after cold stratification. Root cuttings taken in late autumn also work well.