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Toxicity. The seeds and pods of wisteria are potentially extremely dangerous to your pooch, as they can be to people. The seeds and pods have toxic lectins, found in most types of beans.Lectins are toxic because they clump erythrocytes.isteria's pink, purple or white blooms produce highly toxic seeds. Medioimages/Photodisc/Photodisc/Getty Images. Wisterias (Wisteria spp.) grow in U.S. Department of Agriculture plant hardiness zones 4 through 9, depending on species and are favored by their fragrant, colorful blooms and climbing ability.
Report Abuse. Yes, you can let a wisteria vine grow up a tree. It does look beautiful when it engulfs the dead tree with purple blooms. A friend of mine did that, but one warning about that is: As the wisteria grows bigger and stronger, and the oak tree dies out, it becomes weaker.est Answer: You tie twine from the wisteria to the first branches, for the vines to climb. The vines won't cover the trunk unless you managed it. The vine won't kill the tree, and I doubt the tree is dieing...Best of Luck I have one growing in a Hackberry tree.