Carolina Jessamine Native to the South and the state flower of South Carolina, Carolina jessamine (Gelsemium sempervirens) is commonly seen trained over doorways, bay windows, on walls and fences, and up lamp posts and mailboxes. In the wild, we spot its yellow blooms peeking down at us from tree branches. It climbs by twining its thin, pliable stems around something, so it needs a support. Unlike wisteria and some other vines, however, it won't crush the structure it's growing on.

https://www.southernliving.com/garden/grumpy-gardener/jesssamine-and-jasmine-two-fine-wines