This past weekend I took down my eight foot tall driftwood tree and rebuilt it. I had noticed a few deteriorated pieces of driftwood that I wanted to replace. In addition, I wanted to put some large rocks on the ground for the bottom pieces of driftwood to rest on. I also spread crushed oyster shells underneath the tree. On the previous trees, wood had been put down directly on the ground. Raising them up on the rock foundation will keep them dry and prevent termites from getting in them. The oyster shells discourage insects, mold, and mildew. This hasn’t been a big problem with my other driftwood trees, but I decided it would be better to eliminate the possibility of termites having a free lunch.