Uleetsa Moscowa wrote:
I planted three trees (2 Norwegian maples and 1 dwarf magnolia-
Zone-5/6- Cincinnati's northern suburb -Ohio)
The two maples are growing tall and the drop line is slowly
expanding. The magnolia has grown also wider and taller. The
original
circle around the trunk where I mulched is too small compared to the
drip line.

What has the area mulched got to do with the size of the tree or the
drip line of a tree. The only need I know for mulch around a tree is
to keep the grass back from the trunk so you are not harming the tree
trunk with the mower. What am I missing??

Tom J