Does Pruning A Persian Silk Tree Also Restrict Root Growth ?

Question

We want to plant a Persian silk tree but not allow the tree or roots to become too large. We have been told a large container will work but if we plant it in the ground and prune it to control it’s size will that also restrict the root growth as we understand it’s root growth can be extensive.

Answer 1

You may want to consider an alternative to the silk tree as it has more problems than redeeming virtues. As you noted, its roots can upend sidewalks. Pruning the canopy won't help. It reseeds easily and colonizes in your yard and in other places, negatively impacting native species. Here is more:

https://gardeningsolutions.ifas.ufl.edu/care/weeds-and-invasive-plants/mimosa-trees.html
https://www.gardeningknowhow.com/ornamental/trees/mimosa/growing-silk-trees.htm
https://www.gardeningknowhow.com/ornamental/trees/mimosa/mimosa-tree-weeds.htm