Vertical planting is becoming more and more popular. With more people living in smaller spaces, apartments and town homes, vertical plantings can give you what you need for small space vegetable gardening or esthetics.
Planted walls used for retaining can add green space, and create places for butterflies and bees. Once the roots take hold vertical retaining walls will become even stronger. Filled with sand and /or native garden soil , they can be planted with almost anything.