Mulching around tree base
I know you have to keep the mulch off the trunk and primary root flare, but I have some exposed roots within several feet of the trunk within the mulch ring. Can I just put the mulch over these, or do I have to cover the exposed roots with topsoil first?
Allegheny County Pennsylvania
The roots should not be covered with topsoil, and they really do not need to be covered at all. However, if you do decide to mulch them, use no more than an inch or two of mulch.