Have multiple clients that we are having a hard time mowing around their very mature trees. The roots have grown above the ground atleast 6" to the point were the mower decks can't make it over the roots. 1. Can I take a stump grinder to the roots above the ground then fill over with topsoil and seed? 2. or should I just fill the area over with topsoil and seed the area? I would like to remove the roots as they are starting to crack the sidwalk and front porch footings. What do you guys do in this case? I have heard of root pruning but sure just how this works? These trees are atleast 20+ years old (or older) And from what I have read is that these surface roots are signs that the tree is having stability issues. Will pruning back these surface roots kill or harm the trees?