Lemon Balm (Melissa officinalis)

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Sunlight Full sun to partial shade; provide afternoon shade in hot summer climates to prevent leaf scorch

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Watering Water when the top 2–3 cm of soil is dry; avoid overwatering to prevent root rot

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Temperature Hardy to -10°C; prefers 15–25°C for active growth; protect potted plants from extreme frost

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Leaf: Ovate, serrated edges, bright green, fuzzy texture with lemon fragrance when crushed
Flower: Small white to pale yellow tubular blooms in whorls along upper stems
Stem: Square, green, slightly hairy, branching from base

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Watering

Keep soil evenly moist but not waterlogged

Fertilization

Diluted organic feed every 4 weeks. Use balanced, low-nitrogen feed to support foliage growth without excessive stem elongation

Banana peel tea：Soak chopped banana peels in water for 3 days; dilute 1:10 for root drench; discard solids to avoid odor and pest attraction

Pruning

Pinch back young stems to encourage bushy, compact growth
Harvest leaves regularly to prevent early flowering and maintain fragrance potency
Cut back to 5 cm above soil in late autumn to promote vigorous new spring growth
Remove yellow or damaged foliage to improve airflow and reduce disease risk

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Warning: this plant may be toxic.

Pets & Humans

Pets: ASPCA confirmed non-toxic; no adverse effects from ingestion or contact

Humans: Non-toxic to humans; safe for culinary and topical use in moderate amounts

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Culture: Used in traditional European medicine for calming effects; symbolizes sympathy in some folk traditions

Usage: Culinary herb for teas, desserts, and garnishes; aromatic ornamental; mild medicinal use for relieving mild anxiety and insomnia