When to Plant Verbena in Colwell, Iowa (50620)

Location

Colwell, Iowa

ZIP Code

50620

USDA Zone

Last Frost

Sunday, May 10, 2026

📅 Planting Calendar

Start Seeds Indoors Sunday, March 15, 2026

Transplant Outdoors Sunday, May 24, 2026

Pro Tip: Start Verbena seeds indoors 8 weeks before your last frost date, then transplant outdoors around Sunday, May 24, 2026.

🌿 Plant Details

Scientific Name Verbena hybrida

Days to Maturity 85 days

Mature Height 6-18"

Spread 18"

☀️ Growing Requirements

☀️

Sun

Full Sun (6-8 hours)

💧

Water

Moderate (1 inch/week)

↔️

Spacing

12" apart

🌱

Planting Depth

0.125" deep

Seeds typically germinate in 14-21 days

Ready to Plant Verbena in Colwell?

Get your seeds now so they're ready by Sunday, March 15, 2026.

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Growing Verbena in Zone 5a

Verbena (Verbena hybrida) is a popular garden vegetable. In Colwell, Iowa, which is in USDA Hardiness Zone 5a, you should start seeds indoors around Sunday, March 15, 2026.

Your average last frost date is Sunday, May 10, 2026. Plan to transplant your Verbena seedlings outdoors around Sunday, May 24, 2026, about 2 weeks after your last frost date.