As organic goes mainstream, organic foods are starting to show up everywhere—not just in specialty stores and high-end chains like Whole Foods. Fallon suggests checking out these trusty (and probably less expensive) alternatives:

Farmers' markets: Although "local" doesn't necessarily mean "organic" (be sure to ask!), farmers' markets are generally great places to find organic fruits and vegetables. Green bonus: Buying local cuts down on fuel and resources, since most of the produce at the big stores is transported a long way from where it was produced.

CSAs: Consider joining a CSA (which stands for "Community Supported Agriculture"). These groups purchase vegetables directly from organic farmers and have them delivered to central drop-off locations in nearby cities. Some of the best CSAs also provide eggs and meats.

Supermarkets: That's right—if you're willing to do a little extra legwork, you can usually find good organic alternatives at your regular neighborhood supermarket.