Have you ever lived at a place that did not have much of a yard or no yard at all? I have, and if you are like me you love to grow things. To me there is nothing quite as relaxing and therapeutic and having your hands work the earth.
This book, written by Mel Bartholomew will show you how to garden when you did not think it was possible due to time or space. For example, in a 4 foot by 4 foot space you can grow:
32 carrot's, 12 bunches of leaf lettuce, 18 bunches of spinach, 16 radishes, 16 scallions, 16 beets, 9 Japanese turnips, 5 pounds of peas, 1 head of cabbage, 4 heads of romaine lettuce, 1 head of cauliflower and 1 head of broccoli. Of course this is just a sample of what CAN be done in a 4x4 spot, you can change and arrange to your taste.
The best garden I EVER had was inside of a 10X10 dog kennel I had when I lived in town. My dogs had a fenced in yard so to protect my garden I put it inside of a kennel and not only was it easier to work to keep weed free, to harvest and water, but to ENJOY. That year I had so much produce I was giving it to anyone who would take it.
In this book he points out many different options like the one above or going by 1'X1" square grids, using landscape timbers or blocks, to container gardening. If you can find this book, I do suggest it to anyone who likes to garden. Your local library may find it, or E Bay, maybe even an online search since the book is not new.