Easily grown, brush against it and release its intense lemony aroma into your garden. Used since the middle ages to reduce stress, anxiety and to improve sleep. In these hectic days, why not relax with a lemon balm tea just before bedtime? (Check with your doctor.) Flowers late May-June. Height 50-60cm (20-24); spread 50-60cm (20-24). View the recipe for Lemon Balm Tea Calmer to help improve sleep quality, quelling mild anxiety symptoms, enhancing cognitive performance