When to Plant Larkspur in San Diego, California (92136)

Location

San Diego, California

ZIP Code

92136

USDA Zone

10b

Last Frost

Thursday, January 15, 2026

📅 Planting Calendar

Direct Sow Outdoors Thursday, December 18, 2025

Pro Tip: Sow Larkspur directly outdoors 4 weeks before your last frost date.

🌿 Plant Details

Scientific Name Consolida ajacis

Days to Maturity 65 days

Mature Height 24-48"

Spread 12"

☀️ Growing Requirements

☀️

Sun

Full Sun to Partial Shade

💧

Water

Moderate (1 inch/week)

↔️

Spacing

9" apart

🌱

Planting Depth

0.25" deep

Seeds typically germinate in 14-21 days

Ready to Plant Larkspur in San Diego?

Get your seeds now so they're ready by Thursday, December 18, 2025.

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Growing Larkspur in Zone 10b

Larkspur (Consolida ajacis) is a popular garden vegetable. In San Diego, California, which is in USDA Hardiness Zone 10b, you should direct sow seeds around Thursday, December 18, 2025.

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