Although I dont think ours would ever be this neat, I do like the idea of a hedge of some sort - that is safe to put in veggie gardens to create a 'secret garden' somewhere. even if introduction into the veggie patch.
Potager gardens were invented in France as ornamental kitchen gardens. They combine fruit and veg crops with flowers and herbs to enhance the beauty of the space. The idea is to give a functional vegetable plot the year-round visual appeal of a garden.