Frillylily said:I also think it is a fungus of some kind. You should research before planting another tree in that same area after this one is removed. I understand some fungus is IN the soil, so it will affect a new planted tree in the same area there.
dyzzypyxxy said: Let it 'bake' for a few weeks and it should be completely useable again. Till in some good compost before you plant though, as the natural microorganisms are pretty depleted by this process.
Zencat said:It looks like a fairly old tree, too. Is it?