What plants can I successfully plant under a Black Walnut tree that has an 8-inch diameter trunk? And, will I be more successful if I put more dirt around it to plant in (not at the base of the tree, of course)?
Planting Under Black Walnut Tree
Certified GKH Gardening Expert
This article has some suggestions for plants:
Adding soil will only help in the short term. You are better off planting plants that can tolerate black walnuts.