This seems like an economical and no-rot solution to a raised bed. Maybe even strawberries in the blocks. Like this idea a lot. You can plant in the brick holes as well. Perhaps beneficial plants/flowers?
The ten basic tenets of square-foot gardening are: Arrange your garden in squares, not rows. Lay it out in planting areas. Build boxes to hold a new soil mix above ground. Space boxes apart to form walking aisles. Fill boxes with Mel’s