The official state flower of South Carolina since 1924 has been Carolina jasmine Gelsemium sempervirens. Native to southeast United States from Virginia to Texas and onwards south through Mexico into Guatemala, it is one of the classic flowers of the American South, its scented yellow blooms heralding the arrival of spring. Given full a rich, moist, organic soil in full sun the twining vine will cover arbors, verandahs, porches or, unsupported a formal groundcover. The small print at the bottom of the page tells us that the foliage and blossoms are also poisonous.