This type of cultivation is sometimes referred to as ‘Urban Gardening’, since it is well-suited to city   environments where limited horizontal areas are endowed with generous vertical space. Scaled down, this standing garden is the perfect solution for balconies or petite outdoor footprints. I did a little research and found a source that retails a 22” x 31” unit for a whopping $400.00. My version (same dimensions) combines coconut liners, cedar boards, stucco mesh, and yes, ice cube trays to create a similar unit that is sow inexpensive - around $50.00. My ‘Wall Flower’ is planted with lettuces and herbs which I keep by the kitchen door for fresh salads or aromatics, but it could easily morph into a floral masterpiece that Monet would envy.