The new adventure this year was to start a raised garden bed shared with my wonderful neighbor Lola. A friend gave me some wood garage door panels, my wonderful son came by and built it and now we need to fill it. Potting soil is not cheap and it is estimated that we need 48 bags 2 cub ft. I was thinking about filling the bottom with coastal clean hay then go from there with potting soil, moss, sand and top soil. Any ideas/suggestions will be most helpful.