Dead Tree Trunks-Soil Amendment

Q: There are dead tree trunks a distance away from our house. They are almost mulch; if you drop one and they fall apart. Is this broken down enough to mix with clay using a tiller?

A: I think the broken down tree material would make an excellent soil amendment. Once wood is so decomposed that it breaks apart easily it will no longer rob nitrogen from plants that you install afterward. Crumble it up and till it in at your leisure.