Chinese wisteria was brought to the U.S. from China in 1816 and Japanese wisteria was introduced from Japan around 1830. Both were brought in as ornamentals. They have been grown extensively in the southern U.S. as decorative additions to porches, gazebos, walls, and gardens. Most infestations in natural areas are a result of escapes from landscape plantings. Exotic wisterias are long-lived, some vines surviving 50 years or more.
Vegetative reproduction is their primary means of expansion.
Numerous stolons, or above-ground stems, develop roots and shoots at short intervals. Abundant seeds may also be produced if conditions are favorable, but flower buds are susceptible to winter kill. In riparian habitats, seeds may be carried downstream in water for great distances. The only practical methods currently available for control of exotic wisterias are mechanical and chemical. Cut climbing or trailing vines as close to the root collar as possible.