Perennial - Zones 5-9.
Easily grown from seed; germination is best when seed is uncovered. Ensure that the planting medium does not dry out while the seeds are germinating. Enjoys well-drained soil in full sunlight. Leaf growth may be slow the first year, and more vigorous thereafter. Harvest before the plant flowers, for optimum fragrance. Cut the entire plant about 2" above ground. Dry quickly to prevent the leaves from turning black. Lemon balm should be dried within 2 days at temperatures between 90 and 100°F. Place on a wire rack to dry. Store in an airtight container.