The downtown farmer's market has more to offer than picking up fresh fruit, browsing potted plants and gawking at expensive wooden furniture. Several of the shed vendors also sell potted herbs ready for planting in the garden or in a terra-cotta strawberry jar. From lemon mint to Italian cilantro, single pots to gallons, the herbs are healthier and less expensive than the chain nurseries. The selection's better, too. And you don't need to be Martha Stewart (or have her support staff) to grow herbs for cooking, making potpourri or just to prove you can actually nurture a plant. No hydroponics needed.