Lemon Balm

Lamiaceae

Lemon-scented member of the mint family with similar aggressive spreading habit. DUAL-mechanism spread: self-seeding AND underground rhizomes. Container growing strongly recommended. Heart-shaped leaves, square stems, 24-36 inches tall. Hardy zones 4-9. 'Compacta' cultivar is sterile (no viable seed) — best choice for in-ground planting. Used for tea, garnish, and lemon-scented applications.

At a Glance

Days to Maturity

45–60 days

Sun

4+ hours

Full sun to partial shade

Spacing

18–24 "

Container

Yes

3+ gallon pot

Height

2–3 ft

Zone Planting Guide

Your USDA Zone:

Growing Guide

Germination

Optimal Temp 65°F

Watering

Weekly Water 1–1.5 "

Needs Moderate

Soil

pH Range 6–7.5

Soil Type Rich, well-drained

Resilience

Heat: Moderate Cold: High Drought: Medium

Common Problems

powdery-mildew

Cause: Overwatering + poor airflow.

Prevention: Good spacing, morning watering.

Nutrition

Feeding Intensity Light feeder

Harvest

Lemon-scented mature leaves. Peak oil before flowering.

Sources

university Utah State Extension — Lemon Balm university Illinois Extension — Lemon Balm university NC State Extension — Melissa officinalis

More Herbs

Lemon Balm Planting Dates by Zone

Planting dates for Lemon Balm vary by USDA hardiness zone. Select your zone below for frost dates, start-indoors timing, and a full monthly planting calendar.

Zone 5A Zone 5B Zone 6A Zone 6B Zone 7A Zone 7B Zone 8A Zone 8B Zone 9A Zone 9B

Ready to grow Lemon Balm?

Get a personalized planting schedule based on your exact zone with frost dates, task reminders, and feeding plans.

Start Your Garden Plan