Thunbergia gregorii, commonly known as Orange Clockvine or Orange Trumpet Vine, is a fast-growing, evergreen perennial vine native to East Africa, particularly in Kenya and Uganda, where it thrives in open woodlands and scrub areas. It can reach a height of 8–10 feet tall and, without support, can spread extensively as ground cover. The vine is adorned with bright, pure orange, trumpet-shaped flowers that bloom throughout the year in warmer climates and from summer to autumn in cooler regions. These showy flowers are particularly attractive to hummingbirds and butterflies, adding to the plant’s ornamental value.

Orange Clockvine is celebrated for its vibrant flowers and has earned the Royal Horticultural Society’s Award of Garden Merit. It is ideal for trellises, fences, and arbors in urban gardens, patios, and as a decorative screen. In cultivation, it requires full sun to partial shade, well-drained soil, and regular watering, especially during dry periods. While it is hardy to -1°C, it benefits from protection in cooler climates. Gardeners should be cautious as Thunbergia gregorii can become invasive outside its native range, and it is advisable to check local regulations before planting.CC BY-SA 4.0