Wisteria sinensis Prolific (also known as Wisteria Blue Sapphire) is a deciduous climber of Chinese origin native to about seven of the more south easterly provinces such as Guangxi, Guizhou and Hubei. Although a climbing plant, and unlike the Japanese wisteria growing in an anti-clockwise manner, it can also be cultivated into a tree shape more often with a flat top. The flowers always open before the leaves have fully expanded and appear simultaneously in April to June and although shorter in length than the Japanese variety they can be much more prolific. A longer-lived variety than the floribundas, it can survive for over 100 years, it will only begin to flower in its adult stage which could be 20 years or more, however if purchased as a grafted plant this time could be substantially reduced. As with all wisteria it will need a sturdy framework for support such as a pergola or garden arch, or if growing against a wall, straining wires to hold it up.
Wisteria Blue Sapphire is best grown in full sun and although it is said to tolerate some shade it flowers best in a sunny situation. If left unpruned it will grow to 9 metres. To encourage flowering for the next season the plant should be pruned regularly twice a year, first in August by pruning the new shoots back to 6 buds, then in February back to three buds.