I went to Lowes and bought a pickaxe (or whatever they are called). Brought that home and went to work on the holes. This helped immensely, as did the three days of rain that we have gotten. Found out that we have 2 inches of topsoil, ten inches of hard clay, and then it’s rocky sandy clay under that. Both trees are in the ground, and we will see how they do.
Off to work for two days now. Arr!