Earthbag raised bed, inexpensive versus wood
Here is my superadobe raised garden bed. I used a natural plaster of sand, pure clay and cattails. I built it completely by myself; it was fairly easy. The great thing about this garden bed vs. other ones I've seen out of wood is that no chemical preservatives are leaching into the soil. Another advantage is you can sit on it. Also, it will last many more years than a wood frame. I filled the bottom half with rocks, then a landscaping cloth, then the top soil. The plants are growing like crazy; it sure works well. What is interesting is how the rocks imbedded in the mixture make the plaster even stronger. I also experimented with a little bit of wheat paste in my re-do after the water resided (see below). Each section of the garden bed is an experiment. The section that is doing the best in rain and freezing temperatures is the section with the imbedded rocks, which I seal...