As long as youve got a blank wall or a bare fence that needs beautifying, you can tend edibles, annuals, even perennials with these vertical gardening ideas — all of which inspire high hopes for the season ahead. - My Secret Garden
Here is an idea for a vertical garden in a classroom (plus a fish tank). This could also work in other places -- homes, places of worship, community centres, etc. Maybe even outdoors? With a mesh covering over the fish tank, the cats couldn't get in.