When to Plant Lemon Balm in Bala Cynwyd, Pennsylvania (19004)
Location
Bala Cynwyd, Pennsylvania
ZIP Code
19004
USDA Zone
7b
Last Frost
Sunday, April 5, 2026
📅 Planting Calendar
Start Seeds Indoors Sunday, February 22, 2026
Transplant Outdoors Sunday, April 19, 2026
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
☀️ Growing Requirements
☀️
Sun
Full Sun
💧
Water
Regular
Seeds typically germinate in 7-14 days
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Growing Lemon Balm in Zone 7b
Lemon Balm (Melissa officinalis) is a popular garden vegetable. In Bala Cynwyd, Pennsylvania, which is in USDA Hardiness Zone 7b, you should start seeds indoors around Sunday, February 22, 2026.
Your average last frost date is Sunday, April 5, 2026. Plan to transplant your Lemon Balm seedlings outdoors around Sunday, April 19, 2026, about 2 weeks after your last frost date.