Single Wisteria Bloom Panicle Hangs Off Arbor Trellis Royalty-Free Stock Photo

Wisteria sinensis is a woody, deciduous, perennial climbing vine in the genus Wisteria, native to China. Single purple bloom hangs down against wood beam. 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. 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.