Lemon Balm – Botanical Profile

Lemon Balm

Melissa officinalis L., Lamiaceae Family

Distribution and Habitat

Native to Southern Europe and the Mediterranean region; cultivated and naturalized worldwide. Prefers sunny to partially shaded locations and well-drained, moderately moist soils.

Botanical and Morphological Description

A perennial aromatic herb known for its lemon-scented foliage.

• Root: Branched rhizomatous root system.
• Stem: Erect, quadrangular (square in cross-section), branched, softly pubescent.
• Leaves: Opposite, petiolate, ovate to cordate, crenate or serrate margins, wrinkled surface, covered with glandular trichomes producing essential oils.
• Flower: Small, bilabiate, pale yellow to white, arranged in axillary verticillasters, the calyx is tubular, five-toothed; the corolla is two-lipped.
• Fruit: Schizocarp splitting into four nutlets.
• Seeds: Small, smooth, dark brown.

Key Identification Features: Distinct lemon fragrance when leaves are crushed, opposite, heart-shaped leaves, square stem typical of Lamiaceae.