Cedar - So we had to cut a very large tree down, so instead of turning it into fire wood we turned it into a patio. We used inch slabs of western red cedar, laid on a base of rock and sand, with inch crushed rock in between.
How to grow strawberries vertically with a PVC pipe support system. PVC pipe can be painted. Lightly sand the pipe, paint with primer (Kiltz or Zinsser then spray with plastic spraypaint (Krylon Fusion).