When to Plant Valerian in Somerville, Massachusetts (02143)

Location

Somerville, Massachusetts

ZIP Code

02143

USDA Zone

Last Frost

Friday, April 10, 2026

📅 Planting Calendar

Start Seeds Indoors Friday, February 13, 2026

Transplant Outdoors Friday, April 24, 2026

Pro Tip: Start Valerian seeds indoors 8 weeks before your last frost date, then transplant outdoors around Friday, April 24, 2026.

🌿 Plant Details

Scientific Name Valeriana officinalis

Days to Maturity 365 days

Mature Height 36-60"

Spread 24"

☀️ Growing Requirements

☀️

Sun

Full Sun to Partial Shade

💧

Water

Regular (1-2 inches/week)

↔️

Spacing

24" apart

🌱

Planting Depth

0.125" deep

Seeds typically germinate in 14-21 days

Ready to Plant Valerian in Somerville?

Get your seeds now so they're ready by Friday, February 13, 2026.

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Vegetable GardenEarthworm attractor

Other Plants for Somerville

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Growing Valerian in Zone 7a

Valerian (Valeriana officinalis) is a popular garden vegetable. In Somerville, Massachusetts, which is in USDA Hardiness Zone 7a, you should start seeds indoors around Friday, February 13, 2026.

Your average last frost date is Friday, April 10, 2026. Plan to transplant your Valerian seedlings outdoors around Friday, April 24, 2026, about 2 weeks after your last frost date.