How to Grow Lemon Balm
Melissa officinalis
Lemon balm is a delightful perennial herb known for its citrusy aroma and culinary versatility. Gardeners prize this easy-to-grow plant for its ability to thrive in various conditions while repelling pests naturally.
📷 Wikipedia: Lemon balmStarting Lemon Balm: indoors or direct sow?
🏠 Start indoors 4 weeks before your last spring frost, then move the seedlings outside.
Once seedlings have developed their first set of true leaves and nighttime temperatures remain consistently mild after the last frost, carefully transplant them into your garden bed.
Soil, care & harvest
Prepare well-draining soil with a pH between 6.0 and 7.5, as lemon balm thrives in these slightly acidic to neutral conditions. Since it is a perennial herb, you can start seeds indoors about 4 weeks before your last frost date or sow directly outdoors once the soil has warmed up after the danger of hard freezes passes. Press seeds gently into the surface; do not cover them deeply as they need light to germinate within 10 to 14 days.
Space plants 18 to 24 inches apart to ensure good air circulation and vigorous growth without overcrowding. While this herb does not require trellising, its strong scent helps deter many common pests. Keep the soil consistently moist with about 1 to 2 inches of water per week, avoiding waterlogged conditions that cause root rot. Apply a light layer of mulch around the base to retain moisture and suppress weeds.
Monitor for aphids or spider mites, though the plant's strong scent usually keeps these pests at bay. Ensure excellent drainage to prevent powdery mildew in humid weather. Harvest leaves once the plants reach maturity, typically around 70 days after sowing. Snip stems as needed for cooking or tea; regular harvesting encourages bushier growth throughout the growing season.
When to Plant Lemon Balm
Planting windows vary by USDA hardiness zone. Look up yours by ZIP code.
Companion Plants for Lemon Balm
✓ Good companions
Attracts beneficial insects and may help deter bean beetles
Repels cabbage worms and attracts beneficial insects that prey on brassica pests
Deters cabbage moths, flea beetles, and other brassica pests
Repels carrot flies and other root vegetable pests
Provides natural pest control against aphids and leaf miners
Deters aphids and Japanese beetles, while attracting beneficial predatory insects
Helps repel squash bugs and cucumber beetles while attracting pollinators
Lemon balm repels aphids, whiteflies, and hornworms that commonly attack tomatoes
✗ Keep away from
Can be inhibited by lemon balm's strong allelopathic compounds
Both are aggressive spreaders that compete for space and resources
Growth may be stunted due to lemon balm's competitive nature and chemical secretions
Nutrition Facts
Per 100g serving (USDA FoodData Central)
