When to Plant Impatiens in Sierra Madre, California (91025)

Location

Sierra Madre, California

ZIP Code

91025

USDA Zone

10a

Last Frost

Sunday, January 25, 2026

📅 Planting Calendar

Start Seeds Indoors Sunday, November 16, 2025

Transplant Outdoors Sunday, February 8, 2026

Pro Tip: Start Impatiens seeds indoors 10 weeks before your last frost date, then transplant outdoors around Sunday, February 8, 2026.

🌿 Plant Details

Scientific Name Impatiens walleriana

Days to Maturity 60 days

Mature Height 8-18"

Spread 12"

☀️ Growing Requirements

☀️

Sun

Partial to Full Shade (2-4 hours)

💧

Water

Regular (1-2 inches/week)

↔️

Spacing

8" apart

🌱

Planting Depth

0.125" deep

Seeds typically germinate in 14-21 days

Ready to Plant Impatiens in Sierra Madre?

Get your seeds now so they're ready by Sunday, November 16, 2025.

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Growing Impatiens in Zone 10a

Impatiens (Impatiens walleriana) is a popular garden vegetable. In Sierra Madre, California, which is in USDA Hardiness Zone 10a, you should start seeds indoors around Sunday, November 16, 2025.

Your average last frost date is Sunday, January 25, 2026. Plan to transplant your Impatiens seedlings outdoors around Sunday, February 8, 2026, about 2 weeks after your last frost date.