Review Of What Should I Put Under My Raised Garden Bed Ideas. Another material that’s absolutely free is grass clippings. Web soil layering example for raised garden beds.

So, it is not wise to leave the back on the ground, surely it will increase the water drain ability. This barrier separates the soil of the natural ground from the soil in your garden bed. Newspaper is one of the cheapest things to put at the bottom of a raised garden bed.