Gelsemium sempervirens

An evergreen twiner with small glossy leaves, it has scented yellow funnel shaped flowers in spring to early summer ( under glass it flowers in winter for around 3 months). It will reach 6M on a warm sunny wall. Unless grown in sheltered situation in the south and west of the UK it is likely to be disappointing outside and would be better as a conservatory plant where its evergreen habit and flowers scented of violets make it a winner, having said that mine has remained un damaged at -8c.
Gelsemium sempervirens grows best in slightly acid, moist and humus rich soils as it's a wetland plant, like many climbers' cool roots and head in the sun suit it well. Please be aware that all parts of Gelsemium are poisonous.

Came originally from the SE of the USA and central America and arrived in the UK during the 1600's