Can anyone describe differences in Native Wisteria vines and the Asian species? For example:?

Are they all(3) deciduous? Do they twine clockwise or counterclockwise? Are the colors of flowers very different? How are their flowering panicles different? How are their blooming seasons different?

Can anyone describe differences in Native Wisteria vines and the Asian species? For example:?
They all are deciduous.





Several characteristics distinguish American Wisteria from its Asian counterparts. It grows only two-thirds as tall, its racemes are half as long (the shortest of the Wisteria family), and its bloom time is sometimes shorter than many Asian varieties. Its flowers are not scented, and its seed pods are smooth rather than velvety. It produces dense clusters of blue-purple, two-lipped, 2-cm-wide flowers on racemes 5-15cm long in late spring to early summer (June-August). Flowers appear after foliage has developed. American Wisteria can grow up to 15m long over many supports via powerful clockwise-twining stems. Not as aggressive as the two Asian Wisteria. http://en.wikipedia.org/wiki/American_Wi...





Chinese Wisteria can grow 20-30 m long over supporting trees by counter-clockwise-twining stems. The flowers are white, violet, or blue, produced on 15-20 cm racemes in spring, usually reaching their peak in mid-May. 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. http://en.wikipedia.org/wiki/Wisteria_si...





The flowering habit of Japanese wisteria is perhaps the most spectacular of the Wisteria family. It sports the longest flower racemes of any wisteria; they can reach nearly half a meter in length. These racemes burst into great trails of clustered white, violet, or blue flowers in early- to mid-spring (April - May). The flowers carry a distinctive fragrance similar to that of grapes. They open starting from the bottom and progress to the top. The early flowering time of Japanese wisteria can cause problems in temperate climates, where early frosts can destroy the coming years' flowers. Japanese wisteria can grow over 30m long over many supports via powerful clockwise-twining stems. http://en.wikipedia.org/wiki/Wisteria_fl...
Reply:Most wisteria vines sold today are of the Asian variety. Chinese wisteria (Wisteria sinensis) blooms the earliest, usually before the leaves emerge. The stems of Chinese wisteria twine counterclockwise.





The racemes of Japanese wisteria (W. floribunda) are slightly larger and appear a little later in spring, with the expanding foliage. Stems twine clockwise around their supports.





Differences between the two are insignificant when it comes to pruning. Both are rampant growers that bear their flower buds on the previous season's wood. Expert advice on pruning wisterias nearly always revolves around a variation of this central theme: prune often and prune hard. The twining stems of American wisteria (W. frutescens) are vigorous, but less invasive and more manageable than those of the Asians. Unlike the others, our native vine blooms on the current season's growth, near the end of new branches. Because it needs time to initiate those buds, flowers appear later in the season, usually in early summer. The floral display is a little less impressive than the Asian species', it's still a charming vine, displaying handsome foliage and dangling purple flowers with a sweet perfume.





All are deciduous.

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