I've been loving the explosion of choices and awareness in the last fewyears regarding our food and how it is grown and brought to ourtables. When I first got a CSA (community supported agriculture) boxin Boston almost 20 years ago, I had to help organize and enroll 9neighbors and offer my house as the weekly drop-off point. I had tons of extra bell peppers and eggplant (which I am allergic to), but loved the experience. Years later, after a cross country move, and several more CSA experiences, I found a terrific CSA. I can customize my box and eliminate the foods I can't eat.
In the last few years, there has been a movement towards backyard farming in the city. How wonderful to have your vegetables grown locally (really). One company, My Farm has a fabulous model, using backyards to create a distributed farm throughout the city. Beautiful model, especially given San Francisco's varied climates.
I just read this op-ed piece from last Sunday's New York Times about Vertical Gardening in cities. The author states that with continued population growth and the planet experiencing the challenges of global warming that building special structures in cities would allow us to grow our food (using hydroponics and other techniques). In fact, it may be one of our best options for growing food given the changes to our environment and growing population. There also other benefits to greening cities--including better air quality, reducing the impacts on the climate of concentrated areas of concrete and asphalt to name a few. The gardens can also reduce or eliminate the transportation costs of shipping produce from farm to store. Imagine reaching out your dining room window to pick fresh salad greens for lunch.