Lemon balm is one of the many varieties of mint. It is pervasive, prolific, and smells sweetly of lemon and mint. It repels insects, makes a wonderful tea, is a delightful garnish, and seasons food. Eating lemon balm has a number of health benefits, helping with everything from headaches and fevers to stomach upsets. The best source for lemon balm is your own garden, and it is very easy to grow.