Find the Freshest Fruits and Vegetables
This looks like a really handy resource. Use the Seasonal Ingredient Map at Epicurious to find out what's in season where you are. Simply choose the month and click on your state. Being in Wisconsin, I'm not able to find anything right now, but if you live in one of the southern states you're in luck! In Louisiana, arugula, beets, broccoli, carrots, cauliflower, fennel, lettuce, radishes, spinach, and turnips are all in season.
Me, I'll just have to wait - for both the garden and the farmer's market.
Epicurious also gives ingredient descriptions, shopping guides, recipes, and tips to help you get the most of your fresh ingredients.