There is not a problem with planting those trees as far as the tree is concerned. Just stay a few feet from the base of the tree. However the problem is that there are going to be a lot of roots to dig through anywhere beneath the tree and the closer you get to the trunk the more and larger they will be. Also and most importantly the tree will be a major competitor with the shrubs for light. Boxwood needs plenty of sun to do well and under a tree it is just too shady.
Thanks for the question. Please stop in again soon!
Q&A Library Searching Tips