Melissa officinalis (Lemon Balm) 9 cm Pot

Growth habit & appearance: Lemon Balm forms a dense mound of soft, bright-green, ovate leaves that release a strong citrus aroma when brushed. Stems rise in leafy clusters, producing pale nectar-rich flowers that attract bees throughout the summer. Its lemon-rich volatile oils develop particularly well in the cool, moist air of the Irish climate. All our Lemon Balm plants are propagated from vigorous stock in our Co. Clare nursery.

Growing conditions: A hardy perennial perfectly suited to Ireland, thriving in full sun to partial shade and coping well with cool summers. Although native to Europe, it naturalises easily in Irish gardens. Plant in fertile, well-drained soil and mulch with compost to maintain moisture. Hardy plants overwinter outdoors without protection, regrowing strongly each spring.

Traditional & herbal uses: Modern clinical literature supports Lemon Balm’s well-established role in stress reduction, mild anxiety, and improving sleep quality due to its rosmarinic acid and terpene-rich essential oils. Research also highlights antispasmodic effects for digestive discomfort, carminative actions in cases of bloating, and mild antiviral activity—particularly against cold sore–related viruses. Additional studies note cognitive-calming properties, making it useful where nervous agitation, irritability, or tension headaches are present. The essential oil used on cold sores as early as possible is extremely effective at reducing the length of time and severity. Leaves are commonly infused fresh during summer or dried for later use.

Maintenance & harvesting: Cut back plants after flowering to encourage fresh leafy regrowth. Harvest leaves throughout summer, selecting younger shoots for best flavour and potency. For larger clumps, divide the rootball in early spring to maintain vigour. Keep weed-free to prevent competition and ensure strong essential-oil development.