Posted: 30/01/2013 at 12:52
The idea is that you grow small groups of veggies in small squares and on a rotational basis. Depending on the size of the mature plant you can get more, or fewer, per square foot. It doesn't seem at all low maintenance to me as you have to keep up with constant weeding and top dressing with compost to maintain maximum growth and soil fertility.
It might work as a low maintenance herb garden as, if it's sheltered in winter and well drained for the woody Meditarranean herbs, they'd stay in place for years. Of course things like parsley and basil and chives will need more moisture so aren't that compatible.