Answer: Of the two, the evergreen tree as it will provide a sturdier support than a dogwood could. The vine would overwhelm a dogwood in short order. It would most likely also outlive the dogwood by decades. However, there is a good possibility that the wisteria will strangle the evergreen tree and add to the wind catching "sail" effect during a wind storm, so I would not recommend growing it on that tree, either. In my experience, the best places to grow a wisteria vine are on a purpose-built arbor that is very strong, on a large granite boulder, or in the center of a lawn area trained as a standard. In time a wisteria vine can be as thick as a man's leg, it is a very strong and heavy plant and also long lived.
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