Thunbergia Grandiflora Flowering Season. Thunbergia grandiflora Blue Sky Flower - A vigorous evergreen vine with thick tuberous roots from which emerge rope-like stems holding 4-5 inches long dark green leaves that have a slightly toothed margin. Cardiac shape leaf margin.
It can resprout and grow into a large vine within one season - some claim it root hardy likely with mulching to 10F. Appreciates afternoon shade in hot summer areas. Start by sowing two or three seeds in a small pot of fine textured potting soil then place the pot in a bright warm location and water regularly.
Will grow up to 6-8 ft.
Thunbergia grandiflora is an ideal plant for pergolas. I saw this in an arboretum in canada. 28072020 Sky vine thunbergia can be grown from seed started indoors 6 weeks before the last spring frost date. Someone explain me please how I can reproduce thunbergia grandiflora.