When to Plant Impatiens in Chula Vista, California (91921)

Location

Chula Vista, California

ZIP Code

91921

USDA Zone

10b

Last Frost

Thursday, January 15, 2026

📅 Planting Calendar

Start Seeds Indoors Thursday, November 6, 2025

Transplant Outdoors Thursday, January 29, 2026

Pro Tip: Start Impatiens seeds indoors 10 weeks before your last frost date, then transplant outdoors around Thursday, January 29, 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 Chula Vista?

Get your seeds now so they're ready by Thursday, November 6, 2025.

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🤝 Good Companions

BegoniaFernHostas

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Growing Impatiens in Zone 10b

Impatiens (Impatiens walleriana) is a popular garden vegetable. In Chula Vista, California, which is in USDA Hardiness Zone 10b, you should start seeds indoors around Thursday, November 6, 2025.

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