Lemon Balm

Melissa officinalis

Physical Characteristics

Melissa officinalis is a PERENNIAL growing to 0.7 m (2ft 4in) by 0.4 m (1ft 4in) at a fast rate. See above for USDA hardiness. It is hardy to UK zone 4 and is not frost tender. It is in flower from June to October, and the seeds ripen from August to October. The species is hermaphrodite (has both male and female organs) and is pollinated by Bees. The plant is self-fertile. It is noted for attracting wildlife. Suitable for: light (sandy) and medium (loamy) soils and prefers well-drained soil. Suitable pH: mildly acid, neutral and basic (mildly alkaline) soils. It can grow in semi-shade (light woodland) or no shade. It prefers dry or moist soil and can tolerate drought.

Distribution

C. and S. Europe, W. Asia and N. Africa. Naturalized in Britain.

Habitats

Woodland Garden Sunny Edge; Dappled Shade; Shady Edge;

Edible Uses

Edible Parts: Leaves Edible Uses: Condiment Tea Leaves - raw or cooked. A pleasant lemon-like aroma and flavour, they are used mainly as a flavouring in salads and cooked foods[5, 7, 8, 9, 14, 27, 183]. A lemon-flavoured tea can be made from the fresh or dried leaves[21, 183]. A bunch of the leaves can be added to china tea, much improving the flavour, the leaves are also added to fruit cups etc[4]. They are used as a flavouring in various alcoholic beverages including Chartreuse and Benedictine[238].

Medicinal Uses

Antianxiety Antibacterial Antidepressant Antiemetic Antispasmodic Antiviral Aromatherapy Carminative Diaphoretic Digestive Emmenagogue Febrifuge Sedative Tonic Lemon balm is a commonly grown household remedy with a long tradition as a tonic remedy that raises the spirits and lifts the heart[254]. Modern research has shown that it can help significantly in the treatment of cold sores[254]. The leaves and young flowering shoots are antibacterial, antispasmodic, antiviral, carminative, diaphoretic, digestive, emmenagogue, febrifuge, sedative, and tonic[4, 7, 9, 21, 165, 238]. It also acts to inhibit thyroid activity[238]. An infusion of the leaves is used in the treatment of fevers and colds, indigestion associated with nervous tension, excitability and digestive upsets in children, hyperthyroidism, depression, mild insomnia, headaches etc[4, 9, 238]. Externally, it is used to treat herpes, sores, gout, insect bites and as an insect repellent[238]. The plant can be used fresh or dried, for drying it is harvested just before or just after flowering[9]. The essential oil contains citral and citronella, which act to calm the central nervous system and are strongly antispasmodic[254]. The plant also contains polyphenols, in particular these combat the herpes simplex virus which produces cold sores[254]. The essential oil is used in aromatherapy. Its keyword is 'Female aspects'[210]. It is used to relax and rejuvenate, especially in cases of depression and nervous tension[238]. The German Commission E Monographs, a therapeutic guide to herbal medicine, approve Melissa officinalis for nervousness and insomnia (see [302] for critics of commission E).

Known Hazards

Can cause irritation in high concentrates. Avoid during pregnancy. Care if sensitive skin [301].