When to Plant Lemon Balm in Boise, Idaho (83708)
Location
Boise, Idaho
ZIP Code
83708
USDA Zone
7a
Last Frost
Friday, April 10, 2026
📅 Planting Calendar
Start Seeds Indoors Friday, February 27, 2026
Transplant Outdoors Friday, April 24, 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 7a
Lemon Balm (Melissa officinalis) is a popular garden vegetable. In Boise, Idaho, which is in USDA Hardiness Zone 7a, you should start seeds indoors around Friday, February 27, 2026.
Your average last frost date is Friday, April 10, 2026. Plan to transplant your Lemon Balm seedlings outdoors around Friday, April 24, 2026, about 2 weeks after your last frost date.