Can You Grow Lemon Balm in Canadian Zone 9?
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 Canadian Zone 9
Lemon balm grows as a vigorous perennial in your zone — contain it or it will take over.
📅 When to Plant in Canadian Zone 9
Start Indoors
Jan 1
Transplant Out
Jan 15
Last Sow Date
Oct 6
🌾 Harvest
Mar 16 – Mar 26
Based on Canadian Zone 9's average last frost of mid-January and first frost of mid-December.
🌱 Growing Lemon Balm in Canadian Zone 9
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
🗺️ Canadian Plant Hardiness Zones
Zone 9 is shown in
this colour
on the map below
Canadian Plant Hardiness Zone Map (2014) — Agriculture & Agri-Food Canada / Canadian Forest Service
Canadian zones run 0–9 (coldest to warmest) — a separate system from USDA zones. Browse all Canadian zones →
Technical climate details for Canadian Zone 9
- USDA Zone
- 9
- Last Frost
- mid-January
- First Frost
- mid-December
- Frost-Free Days
- 334
- 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.
Canadian Zone 9 is in USDA Hardiness Zone 9 with approximately 334 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.