Gelsemium sempervirens
Common Name(s):
Carolina jasmine, Carolina jessamine, Yellow jessamine

Flower:
The Carolina jasmine has bright, fragrant, funnel-shaped, yellow flowers (to 1.5” long) that appear either solitary or in clusters (cymes) in late winter to early spring (February – April depending on location). Its flowers often serve as a demonstrative signal that winter is coming to an end. The flowers are followed by a thin, flattened capsule fruit.
Zones:
7-10
Habit:
Evergreen
Site:
Carolina jasmine is winter hardy to USDA Zones 7-10 where it is best grown in moist, organically rich, well-drained soils in full sun. It will tolerate light shade, but best flowering and growth occur in full sun. Plants will grow as a twining vine or if unsupported as a bushy ground cover.
Size:
3 ft. if not allowed-climb with a 20-30 ft. spread
Texture:
Fine to medium
Form:
Twining vine
Exposure:
Sun to partial shade; range of soil types
Fruit:
Yellow flowers in spring; fragrant
Family:
Loganiaceae
Origin:
NC, USA
Distribution:
Piedmont and Coastal Plain.

https://plants.ces.ncsu.edu/plants/all/gelsemium-sempervirens/