When to Plant Lemon Balm in Columbia, California (95310)

Location

Columbia, California

ZIP Code

95310

USDA Zone

Last Frost

Friday, February 20, 2026

📅 Planting Calendar

Start Seeds Indoors Friday, January 9, 2026

Transplant Outdoors Friday, March 6, 2026

Pro Tip: Start Lemon Balm seeds indoors 6 weeks before your last frost date, then transplant outdoors around Friday, March 6, 2026.

🌿 Plant Details

Scientific Name Melissa officinalis

Days to Maturity 70 days

Mature Height 18-36"

Spread 24"

Type Spreading

Fruit Size N/A

☀️ Growing Requirements

☀️

Sun

Partial Shade to Full Sun

💧

Water

Regular (keep moist)

↔️

Spacing

18" apart

🌱

Planting Depth

0.125" deep

Seeds typically germinate in 10-14 days

Ready to Plant Lemon Balm in Columbia?

Get your seeds now so they're ready by Friday, January 9, 2026.

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Growing Lemon Balm in Zone 9a

Lemon Balm (Melissa officinalis) is a popular garden vegetable. In Columbia, California, which is in USDA Hardiness Zone 9a, you should start seeds indoors around Friday, January 9, 2026.

Your average last frost date is Friday, February 20, 2026. Plan to transplant your Lemon Balm seedlings outdoors around Friday, March 6, 2026, about 2 weeks after your last frost date.