Sweet lemon-mint scent. Lemon balm is valued as a culinary, cosmetic and medicinal herb. Use fresh sprigs to top drinks and as garnishes on salads and main dishes. The fresh or dried leaves make a great cold or hot tea, and the dried leaves can be used potpourris. Traditionally valued as a medicinal herb, lemon balm has mild sedative properties. Lemon balm is easy to grow from seed sown in the spring or early fall.