About Jasminum polyanthum Franch.
Jasminum polyanthum Franch. is an evergreen climbing plant that reaches up to 6 metres (20 feet) in height when given support. It produces compound leaves that hold 5 to 9 leaflets; the upper leaf surface is dark green, while the underside is a lighter green, and the terminal leaflet is noticeably larger than the other leaflets on each leaf. Its branches are glabrous, and can be either terete or angular. This species is native to mountainous regions of Southwest China, specifically Guizhou, Sichuan, and Yunnan, as well as Myanmar. It naturally occurs in valleys and forests at elevations ranging from 1,400 to 3,000 m (4,600 to 9,800 ft). Jasminum polyanthum is widely known as a common house plant in the United States and Europe. It grows quickly and easily, and produces abundant flowers. It can also be grown outdoors in gardens where climate conditions are suitable, as it cannot tolerate freezing temperatures, and is recommended for USDA hardiness zones 8 through 11. In suitable climates, it can be grown outdoors to cover walls and fences, and grows well in full sun or light shade. It can be propagated from both seed and suckers. In 1993, the Royal Horticultural Society awarded Jasminum polyanthum the Award of Garden Merit (AGM). It was also selected for the RHS Bicentenary list of 200 plants, with the description: "This popular houseplant is an easily-grown, evergreen, half-hardy climber with loose panicles in summer of many strongly-fragrant pink-backed, white, trumpet-shaped flowers. It does not suffer pest or disease problems and is simple to propagate."
