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When to Plant Lemon Balm in Zone 11B

USDA Zone

11B

Cities Covered

14

Avg Last Frost

Friday, January 1, 2027

Plant Type

Indoor Start

📅 Planting Calendar for Zone 11B

Start Seeds Indoors Friday, November 20, 2026
Transplant Outdoors Friday, January 15, 2027

Pro Tip: Start Lemon Balm seeds indoors 6 weeks before your last frost date for best results.

🌿 Plant Details

Scientific Name Melissa officinalis
Days to Maturity 70 days
Sun Requirements Full Sun

Cities in Zone 11B

Other Plants for Zone 11B

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Growing Lemon Balm in USDA Zone 11B

Lemon Balm (Melissa officinalis) grows well in USDA Hardiness Zone 11B. This zone includes cities like Long Key, Islamorada, Key West and 11 more.

The average last frost date for Zone 11B is around Friday, January 1, 2027. For best results, start your Lemon Balm seeds indoors around Friday, November 20, 2026, then transplant outdoors around Friday, January 15, 2027.

Expect to harvest your Lemon Balm approximately 70 days after planting.