Gelsemium sempervirens is also known as the Yellow Jessamine, Carolina Jessamine, Yellow Jasmine, Carolina Jasmine, Evening Trumpet Flower, False Jasmine, Woodbine, or Gelsemium. It belongs to the Gelsemiaceae family of plants. Yellow Jessamine or Gesemium sempervirens is the state flower of South Carolina, USA. Gelsemium sempervirens is an evergreen perennial climber and native to tropical and subtropical America including Honduras, Guatemala, Belize, and Mexico, or the Southern United States. It is a twining vine, a climber with a reddish-brown stem.
Gesemium sempervirens can grow to 20ft or 6m with the right support to climb. It has ovate, lanceolate, green leaves about 10cm or 4in. Though this is an evergreen plant during winter the leaves might turn purplish or yellow. The trumpet-shaped flower is yellow with orangish throats, they appear in clusters during spring and summer. Gesemium sempervirens flowers are fragrant.
Though Gelsemium sempervirens are used in traditional medicine the plant is toxic as it contains strychnine-related alkaloids. The nectar is even toxic to honey bees, however, bumblebees do benefit from the nectar. Gelsemium sempervirens is hardy to 23 °F or -5º.
Grow Gelsemium sempervirens in the sun or partial shade, protected from winds. Plant it in moderately fertile soil. Propagate from seed or semi-hardwood cuttings in the summer. It is generally disease-free. Watch out for whitefly.