Chinese Wisteria

Chinese Wisteria Plant Information

Chinese Wisteria grows in the following 26 states:

Connecticut, District Of Columbia, Georgia, Illinois, Kentucky, Maryland, Mississippi, North Carolina, Pennsylvania, South Carolina, Vermont, West Virginia, Alabama, Arkansas, Delaware, Florida, Hawaii, Louisiana, Massachusetts, Michigan, Missouri, New Jersey, New York, Tennessee, Texas, Virginia

A one acre (4,000 m2) specimen located in Sierra Madre, California is recognized by Guinness World Records as the world's largest blossoming plant.Captain Richard Rawes of the East Indiaman Warren Hastings brought it from China to Britain in 1816, from where it spread to Europe and North America. It has secured for itself a place as one of the most popular vines for home gardens due to its flowering. It has however become an invasive species in some areas of the eastern United States where the climate closely matches that of China.All parts of the plant contain a glycoside called wisterin which is toxic if ingested and may cause nausea, vomiting, stomach pains, and diarrhea. Wisterias have caused poisoning in children of many countries, producing mild to severe gastroenteritis.It is hardy in USDA plant hardiness zones 5-9, and prefers moist soils. It is considered shade tolerant, but will flower only when exposed to partial or full sun. It will also flower only after passing from juvenile to adult stage, a transition that may take up to 20 years. It can live for over a hundred years.It can grow 20-30 m long over supporting trees by counterclockwise-twining stems. The leaves are shiny, green, pinnately compound, 10-30cm in length, with 9-13 oblong leaflets that are each 2-6cm long. The flowers are white, violet, or blue, produced on 15-20cm racemes in spring, usually reaching their peak in mid-May in the northern hemisphere. The flowers on each raceme open simultaneously before the foliage has expanded, and have a distinctive fragrance similar to that of grapes. Though it has shorter racemes than Wisteria floribunda (Japanese wisteria), it often has a higher quantity of racemes. The fruit is a flattened, brown, velvety, bean-like pod 5-10cm long with thick disk-like seeds around 1cm in diameter spaced evenly inside; they mature in summer and crack and twist open to release the seeds; the empty pods often persist until winter. However seed production is often low, and most regenerative growth occurs through layering and suckering.Wisteria sinensis (Chinese wisteria) is a woody, deciduous, perennial climbing vine in the genus Wisteria, native to China in the provinces of Guangxi, Guizhou, Hebei, Henan, Hubei, Shaanxi, and Yunnan. While this plant is a climbing vine, it can be trained into a tree-like shape, usually with a wavy trunk and a flattened top.

Jiang, Yifan; Chen, Xinlu; Lin, Hong (2011). "Floral Scent in Wisteria: Chemical Composition, Emission Pattern, and Regulation". Journal of the American Society for Horticultural Science. 136 (5): 307-314.
Zhang, Shu-yong; Xia, Jiang-bao; Zhou, Ze-fu; Zhang, Guang-can (September 2007). "Photosynthesis responses to various soil moisture in leaves of Wisteria sinensis". Journal of Forestry Research. 18 (3): 217-220. doi:10.1007/s11676-007-0044-6.

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