Living walls are small space garden solutions. Have a small space, but want a big garden? The secret growing tool which can support a lot of plants in a small space is a living wall. With a living wall system, you can grow 24, 48, 64 plants or more easily in less than 2 square feet of ground space. The higher the growing system, the more plants you can plant. All you have to do is take the traditional square foot garden, which has between one and 16 plants, then go up along the wall from the ground.