Can You Grow Lemon Balm in Zone 9a?
Quick Answer:
✅ Yes — Lemon balm grows as a vigorous perennial in your zone — contain it or it will take over.
✅ Yes
Lemon Balm grows well in Zone 9a
Lemon balm grows as a vigorous perennial in your zone — contain it or it will take over.
📅 When to Plant in Zone 9a
Start Indoors
Jan 1
Transplant Out
Jan 20
Last Sow Date
Oct 11
🌾 Harvest
Mar 21 – Mar 31
Based on Zone 9a's average last frost of late January and first frost of late December.
🌱 Growing Lemon Balm in Zone 9a
Grow in a container to control spreading. Harvest before flowering for best flavor. Cut back hard in midsummer to encourage fresh growth. Tolerates partial shade better than most herbs.
🪴 Container: 3+ gal pot🏠 Indoor Viable❄️ Frost Tolerant
🗺️ USDA Plant Hardiness Zones
Zone 9 is shown in
this colour
on the map below
2023 USDA Plant Hardiness Zone Map — public domain. USDA Agricultural Research Service
USDA zones run 1a–13b (26 half-zones). Each full zone above covers both the a and b half-zones. Browse all US zones →
Technical climate details for Zone 9a
- USDA Zone
- 9a
- Last Frost
- late January
- First Frost
- late December
- Frost-Free Days
- 333
- Lemon Balm Zone Range
- 3a – 9b
- Days to Harvest
- 60–70 days
Frequently Asked Questions
Lemon balm grows as a vigorous perennial in your zone — contain it or it will take over.
Zone 9a is in USDA Hardiness Zone 9a with approximately 333 frost-free days per year.
Lemon Balm grows in USDA Zones 3a–9b.
Lemon Balm is beginner-friendly and one of the easier crops to grow.