When to Plant Nasturtium in San Diego, California (92111)

Location

San Diego, California

ZIP Code

92111

USDA Zone

10b

Last Frost

Thursday, January 15, 2026

📅 Planting Calendar

Direct Sow Outdoors Thursday, January 22, 2026

Pro Tip: Sow Nasturtium directly outdoors 1 week after your last frost date — it needs warm soil.

🌿 Plant Details

Scientific Name Tropaeolum majus

Days to Maturity 60 days

Mature Height 12-18"

Spread 18"

Type Annual

☀️ Growing Requirements

☀️

Sun

Full Sun to Partial Shade

💧

Water

Low (drought tolerant)

↔️

Spacing

12" apart

🌱

Planting Depth

0.5" deep

Seeds typically germinate in 7-14 days

Ready to Plant Nasturtium in San Diego?

Get your seeds now so they're ready by Thursday, January 22, 2026.

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🤝 Good Companions

TomatoCucumberSquashRadish

⚠️ Avoid Planting Near

Fennel

Other Plants for San Diego

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Growing Nasturtium in Zone 10b

Nasturtium (Tropaeolum majus) is a popular garden vegetable. In San Diego, California, which is in USDA Hardiness Zone 10b, you should direct sow seeds around Thursday, January 22, 2026.

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