When to Plant Marigold in San Bernardino, California (92413)

Location

San Bernardino, California

ZIP Code

92413

USDA Zone

10a

Last Frost

Sunday, January 25, 2026

📅 Planting Calendar

Start Seeds Indoors Sunday, December 14, 2025

Transplant Outdoors Sunday, February 8, 2026

Pro Tip: Start Marigold seeds indoors 6 weeks before your last frost date, then transplant outdoors around Sunday, February 8, 2026.

🌿 Plant Details

Scientific Name Tagetes patula

Days to Maturity 50 days

Mature Height 6-24"

Spread 12"

Type Annual

☀️ Growing Requirements

☀️

Sun

Full Sun (6-8 hours)

💧

Water

Moderate (1 inch/week)

↔️

Spacing

12" apart

🌱

Planting Depth

0.25" deep

Seeds typically germinate in 5-10 days

Ready to Plant Marigold in San Bernardino?

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

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Other Plants for San Bernardino

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Growing Marigold in Zone 10a

Marigold (Tagetes patula) is a popular garden vegetable. In San Bernardino, 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 Marigold seedlings outdoors around Sunday, February 8, 2026, about 2 weeks after your last frost date.