When to Plant Tomato in San Diego, California (92169)

Location

San Diego, California

ZIP Code

92169

USDA Zone

10b

Last Frost

Thursday, January 15, 2026

📅 Planting Calendar

Start Seeds Indoors Thursday, December 4, 2025

Transplant Outdoors Thursday, January 29, 2026

Pro Tip: Start Tomato seeds indoors 6 weeks before your last frost date, then transplant outdoors around Thursday, January 29, 2026.

🌿 Plant Details

Scientific Name Solanum lycopersicum

Days to Maturity 70 days

Mature Height 36-72"

Spread 24"

Type Indeterminate

Fruit Size Medium (4-8 oz)

☀️ Growing Requirements

☀️

Sun

Full Sun (6-8 hours)

💧

Water

Regular (1-2 inches/week)

↔️

Spacing

24" apart

🌱

Planting Depth

0.25" deep

Seeds typically germinate in 5-10 days

Ready to Plant Tomato in San Diego?

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

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🤝 Good Companions

BasilCarrotParsleyMarigoldBorage

⚠️ Avoid Planting Near

BrassicasFennelCornKohlrabi

Other Plants for San Diego

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Growing Tomato in Zone 10b

Tomato (Solanum lycopersicum) is a popular garden vegetable. In San Diego, California, which is in USDA Hardiness Zone 10b, you should start seeds indoors around Thursday, December 4, 2025.

Your average last frost date is Thursday, January 15, 2026. Plan to transplant your Tomato seedlings outdoors around Thursday, January 29, 2026, about 2 weeks after your last frost date.