The Native American Wisteria Tree 'Blue'  is the wisteria variety that produces its flower clusters faster ooposed to the chinese variety which takes a bit longer. Also the Native American Wisteria tends to produce larger flower clusters than the chinese variety does. You wont have to worry about this particular specimen being a hassle in regards to spreading. The Native American Wisteria is much much slower when talking about spreading as the chinese wisteria is a lot more aggresive. Plant your Native American Wisteria tree in an area where it will receive full sun so that you can get the optimum flowering affect. This stunning flowering tree can grow with ease in northern states and typically survive temperatures down to negative 15 degrees Fahrenheit. (USDA Zones 5-9)