When to Plant Spinach in San Francisco, California (94115)

Location

San Francisco, California

ZIP Code

94115

USDA Zone

10b

Last Frost

Thursday, January 15, 2026

📅 Planting Calendar

Direct Sow Outdoors Thursday, December 4, 2025

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

🌿 Plant Details

Scientific Name Spinacia oleracea

Days to Maturity 40 days

Mature Height 6-12"

Spread 6"

Type Leaf

Fruit Size N/A

☀️ Growing Requirements

☀️

Sun

Partial Shade to Full Sun

💧

Water

Regular (keep moist)

↔️

Spacing

6" apart

🌱

Planting Depth

0.5" deep

Seeds typically germinate in 7-14 days

Ready to Plant Spinach in San Francisco?

Get your seeds now so they're ready by Thursday, December 4, 2025.

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🤝 Good Companions

StrawberryPeaBeanBrassicas

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Growing Spinach in Zone 10b

Spinach (Spinacia oleracea) is a popular garden vegetable. In San Francisco, California, which is in USDA Hardiness Zone 10b, you should direct sow seeds around Thursday, December 4, 2025.

Your average last frost date is Thursday, January 15, 2026. Spinach grows well when direct sown, as it doesn't transplant well or germinates quickly outdoors.