Gardening is not limited to those who have a frontyard, a backyard, or do it for a living. The invention of the window box and the planter box allow people who live in multi-level urban streetfront properties to have a garden of their own.
I, on the other hand, own a condo that's not really streetfront, but could be called streetback since there's a semi-busy street adjacent to a really busy street behind my backyard. Yes, I have a backyard, and up until a couple of days ago, it was something comparative to what you see on the Discovery Channel when an episode about wildlife and jungles and endangered species is being shown. I had a swamp with cat's tails growing out of a barrel and abundant weeds that were taller than my 6-foot tall roommate.
Four palm trees, a couple dozen small flowers and Creeping Jennies, fifty sandstone pavers, four bags of decorative bark, three bags of organic potting soil, several hours of in-the-hot-summer-sun labor, and a couple hundred dollars later, we have a new, developing garden: