When to Plant Broccoli in Pasadena, California (91105)

Location

Pasadena, California

ZIP Code

91105

USDA Zone

10a

Last Frost

Sunday, January 25, 2026

📅 Planting Calendar

Start Seeds Indoors Sunday, December 14, 2025

Transplant Outdoors Sunday, January 25, 2026

Pro Tip: Start Broccoli seeds indoors 6 weeks before your last frost date, then transplant outdoors around Sunday, January 25, 2026.

🌿 Plant Details

Scientific Name Brassica oleracea var. italica

Days to Maturity 60 days

Mature Height 18-30"

Spread 18"

Type Head

Fruit Size Medium (4-7 inch head)

☀️ Growing Requirements

☀️

Sun

Full Sun (6 hours)

💧

Water

Regular (1-1.5 inches/week)

↔️

Spacing

18" apart

🌱

Planting Depth

0.5" deep

Seeds typically germinate in 4-7 days

Ready to Plant Broccoli in Pasadena?

Get your seeds now so they're ready by Sunday, December 14, 2025.

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🤝 Good Companions

BeetCeleryOnionPotatoDill

⚠️ Avoid Planting Near

TomatoStrawberryPepper

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Growing Broccoli in Zone 10a

Broccoli (Brassica oleracea var. italica) is a popular garden vegetable. In Pasadena, California, which is in USDA Hardiness Zone 10a, you should start seeds indoors around Sunday, December 14, 2025.

Your average last frost date is Sunday, January 25, 2026. Plan to transplant your Broccoli seedlings outdoors around Sunday, January 25, 2026, about 0 weeks after your last frost date.