Q.: We have two maple trees in our front yard and the roots come out of the ground. I put a sandstone wall about one foot high and eight feet in diameter around each tree and filled it with soil to ...

Adding topsoil over exposed tree roots can suffocate them and cause rot. Instead of adding soil, apply a 2- to 3-inch layer of hardwood mulch over the root zone. Planting shade-loving ground cover is ...