I have 4 Sweet Gum trees in my back yard that are all in close proximity, but two have some pretty rough looking scars on them that have me worried. I have started the process of removing soil from around the trees, as they were all planted 4-6" to deep (no root flares), but am wondering about these wounds.
I plan on digging down to the root flares and leveling my yard at that point since I am getting ready for dirt work in my yard anyways and the back yard is too high. Can I just preform the sick tree treatment on these? I have been told I need to spread out some ironite out under these trees or they get chloratic, is this correct?