Grow sweet strawberry in a vertical PVC tube is great solution for small garden or yard. Vertical planter will save you a lot of space, at the same time keep plants out of reach from garden insect pests AND enable you to switch to hydroponics.
Would this fence idea work for an herb garden? In case you have a dull wooden fence at your backyard you can easily spice up it. You can make a colorful vertical garden of it. Tools and materials - Terra-cot