When to Plant Valerian in Mesa, Arizona (85206)

Location

Mesa, Arizona

ZIP Code

85206

USDA Zone

Last Frost

Tuesday, February 10, 2026

📅 Planting Calendar

Start Seeds Indoors Tuesday, December 16, 2025

Transplant Outdoors Tuesday, February 24, 2026

Pro Tip: Start Valerian seeds indoors 8 weeks before your last frost date, then transplant outdoors around Tuesday, February 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 Mesa?

Get your seeds now so they're ready by Tuesday, December 16, 2025.

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Vegetable GardenEarthworm attractor

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Growing Valerian in Zone 9b

Valerian (Valeriana officinalis) is a popular garden vegetable. In Mesa, Arizona, which is in USDA Hardiness Zone 9b, you should start seeds indoors around Tuesday, December 16, 2025.

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