Melissa officinalis, known as lemon balm, balm, common balm, or balm mint, is a perennial herbaceous plant in the mint family Lamiaceae, native to south-central Europe, North Africa, the Mediterranean region, and Central Asia.
The flowers are followed by green fruit, turning Yellow when ripe. It is one of the most tropical of the passionfruit varieties, and a major commercial crop used in fruit juices.