Wisteria macrostachya (blue moon) My concerns: #1 that the plant drips sap on cars below the arbour. #2 that the roots will get

Question

into the house foundation or lift the driveway. Hi, I am doing some research into the possibility of building an arbour over my driveway and training a Wisteria macrostachya (blue moon) to trail over it. I will plant it with compost in a clayish (we live on a delta) soil 4 feet from a house foundation and 1 foot away from a cement driveway. It will get June sun from 8:30am-1:00 pm and 4:00pm – 7:00 pm daily. Our water table is only 5 feet down in summer and can be as high as 2 feet in the winter. My concerns:
#1 that the plant drips sap on cars below the arbour.
#2 that the roots will get into the house foundation or lift the driveway.

I picked an American variety because I thought it less evasive. Should I be concerned about the two points above given my planting coordinates & situation?

Thanks very much for your help.

Answer 1

Your concerns are legitimate. They have very invasive roots (even the American variety) and upon injury can leak some sap. I would not advise putting it near anything that you don't want destroyed by them.

This article will offer more information:

https://www.gardeningknowhow.com/ornamental/vines/wisteria/wisteria-root-system.htm