When to Plant Snapdragon in Pasadena, California (91129)

Location

Pasadena, California

ZIP Code

91129

USDA Zone

10b

Last Frost

Thursday, January 15, 2026

📅 Planting Calendar

Start Seeds Indoors Thursday, November 20, 2025

Transplant Outdoors Thursday, January 29, 2026

Pro Tip: Start Snapdragon seeds indoors 8 weeks before your last frost date, then transplant outdoors around Thursday, January 29, 2026.

🌿 Plant Details

Scientific Name Antirrhinum majus

Days to Maturity 60 days

Mature Height 12-36"

Spread 12"

☀️ Growing Requirements

☀️

Sun

Full Sun to Partial Shade

💧

Water

Regular (1-2 inches/week)

↔️

Spacing

12" apart

🌱

Planting Depth

0.125" deep

Seeds typically germinate in 10-21 days

Ready to Plant Snapdragon in Pasadena?

Get your seeds now so they're ready by Thursday, November 20, 2025.

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Growing Snapdragon in Zone 10b

Snapdragon (Antirrhinum majus) is a popular garden vegetable. In Pasadena, California, which is in USDA Hardiness Zone 10b, you should start seeds indoors around Thursday, November 20, 2025.

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