Q: We have an established maple tree in our backyard whose roots are showing on the surface. I would love to plant under the tree (shrubs, perennials, etc.)and wonder what the best way to do this without damaging the tree would be. If we add topsoil, will the roots just come to the surface again and would it weaken the tree? I saw a raised bed where there was a ring of stone wall about a foot from the trunk of the tree,(keeping the dirt from touching the trunk),with another stone wall on the outside forming the raised bed- sort of like a donut around the trunk. But this was done around a small ornamental tree. Thank you for your time and any suggestions.
Connie
A: Maples typically have shallow roots. You can add top soil above the roots but no more than about 4 inches. You can also try to plant between the roots in those pocket spaces. Those existing covered roots will slowly get wider and closer to the surface but won't likely move back up to the top again. Just be sure not to add too much soil on top of roots or you will suffocate the tree.
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