Answer: You can train your wisteria into a tree form but you should wait until after the roots have become established in your garden. Plant your wisteria now and allow it to grow unpruned for the remainder of the year. Next spring you can prune out the bottom growth so you only have a single stem or trunk. You can drive a stake into the ground next to it to provide some temporary support until you decide whether to put a structure next to it. If you prune out everything now when you first plant it, the plant may not recover. Patience is the key!
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