Why give incorrect information. There is a MAJOR difference between the wisteria tree -Bolusanthus and the wisteria vine – Wisteria
We receive numerous inquiries about Wisteria. Genus names are not always specified in the the questions we receive. When specifics are provided information is provided for the genus.
Bolusanthus speciosus or tree wisteria is indigenous to South Africa and is often noted to mimic the Jacaranda Tree. It is found in wooded grasslands in Southern Africa.
Some interesting information and specifics about this tree can be found at:
http://pza.sanbi.org/bolusanthus-speciosus
Wisteria Vines are native to China, Japan and eastern United States. According to the Royal Horticultural Society, the three most commonly grown are Wisteria floribunda (Japanese wisteria), Wisteria sinensis (Chinese wisteria) and Wisteria brachybotrys (silky wisteria).
These 3 species are strong-growing and capable of reaching around 10m (33ft) in trees or spread up to 20m (66ft) against a wall. A wisteria can be trained as a free-standing standard in the border or large container.