Lemon Balm is a memeber of the mint family so will will reward you with strong growth. Grow in pots to prevent the invasive habit, even burying the pot in a bed will help prevent the invasive habit. 
 
Grow your own lemon balm tea, a favourite amongst our gardners here at Online Garden Plants. Can also be used in deserts, salads, vinaigrettes, sea food dishes, soups & Sauces for its fresh sweet and citrus burst.