When to Plant Mâche in San Mateo, California (94402)

Location

San Mateo, California

ZIP Code

94402

USDA Zone

10a

Last Frost

Sunday, January 25, 2026

📅 Planting Calendar

Direct Sow Outdoors Sunday, December 14, 2025

Pro Tip: Sow Mâche directly outdoors 6 weeks before your last frost date.

🌿 Plant Details

Scientific Name Valerianella locusta

Days to Maturity 45 days

Mature Height 4-8"

Spread 4"

☀️ Growing Requirements

☀️

Sun

Partial Shade to Full Sun

💧

Water

Moderate (1 inch/week)

↔️

Spacing

4" apart

🌱

Planting Depth

0.25" deep

Seeds typically germinate in 7-14 days

Ready to Plant Mâche in San Mateo?

Get your seeds now so they're ready by Sunday, December 14, 2025.

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Growing Mâche in Zone 10a

Mâche (Valerianella locusta) is a popular garden vegetable. In San Mateo, California, which is in USDA Hardiness Zone 10a, you should direct sow seeds around Sunday, December 14, 2025.

Your average last frost date is Sunday, January 25, 2026. Mâche grows well when direct sown, as it doesn't transplant well or germinates quickly outdoors.