The flowers of a cluster tend to all open at the same time. Chinese wisteria is not quite as hardy as the Japanese and also is not as fragrant. There are cultivars of both species that have white blossoms. The vine itself is quite vigorous and will need a strong support to keep up with its fast growth. Wisteria can grow up to 10 feet a year, especially once it's established in the proper environment.
Wisteria performs best in deep, moist, but well-drained soil that is neutral to slightly alkaline.
Since most gardeners are drawn to this plant for its blossoms, they are quite frustrated by the plant's notorious tendency to produce only vegetation. There are many potential explanations for this annoying problem, including immaturity of the plant, too much nitrogen, insufficient phosphorus, poor-quality plants, and too much shade. Wisteria need to reach a degree of maturity before they are able to produce flowers. In fact, in can take up to 15 years or longer for the blooming stage to arrive. Those who have succeeded in raising wisteria often recommend root pruning, application of superphosphate, rigorous pruning of the shoots, and planting in full sun.