Answer: Both Japanese and Chinese Wisteria are vigorously growing plants once established, and both can be trained into a single trunk if desired. The key to controlling wisteria is to prune them on an annual basis. I have a 20 year old wisteria growing up an ordinary trellis (2X4's and 1X2') and it is happily growing within the boundaries I have set for it. I think you'll be pleased with the way it responds to pruning. The horror stories you hear are because the plants have been neglected for many years. Enjoy your new wisteria!
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