Gelsemium sempervirens – ​Evening Trumpetflower is a climbing, twining vine with bright yellow solitary (sometimes in cymes) funnel-shaped flowers each 1.5” long by 1” wide. Gelsemium sempervirens is May flowering in northeastern Connecticut. It is very showy and fast growing. The leaves are semi-glossy lances shading to a red-purple in autumn. This interesting vine holds onto its leaves and is evergreen in warmer climes; at the northern end of the range its tendency is to be more deciduous. We are getting this lovely vine to survive even in our rigorous USDA zone 5b climate by having planted it on the south side of our home. In the tough winter of 2009 when we experienced three nights into the lower minus teens Gelsemium sempervirens mostly died to the ground but rebounded with vigor during that summer. It even flowered from one of the stems that survived that very cold winter (which should tell you that it blooms on 2nd year or “old” wood). By the middle of that growing season it had recovered entirely. In the north spring planting is strongly advised. Cutting grown.