When to Plant Echinacea (Coneflower) in Decatur, Iowa (50067)

Location

Decatur, Iowa

ZIP Code

50067

USDA Zone

Last Frost

Saturday, April 25, 2026

📅 Planting Calendar

Start Seeds Indoors Saturday, February 14, 2026

Transplant Outdoors Saturday, May 9, 2026

Pro Tip: Start Echinacea (Coneflower) seeds indoors 10 weeks before your last frost date, then transplant outdoors around Saturday, May 9, 2026.

🌿 Plant Details

Scientific Name Echinacea purpurea

Days to Maturity 365 days

Mature Height 24-48"

Spread 24"

Type Perennial

☀️ Growing Requirements

☀️

Sun

Full Sun to Partial Shade

💧

Water

Low (drought tolerant once established)

↔️

Spacing

18" apart

🌱

Planting Depth

0.25" deep

Seeds typically germinate in 14-21 days

Ready to Plant Echinacea (Coneflower) in Decatur?

Get your seeds now so they're ready by Saturday, February 14, 2026.

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Growing Echinacea (Coneflower) in Zone 5b

Echinacea (Coneflower) (Echinacea purpurea) is a popular garden vegetable. In Decatur, Iowa, which is in USDA Hardiness Zone 5b, you should start seeds indoors around Saturday, February 14, 2026.

Your average last frost date is Saturday, April 25, 2026. Plan to transplant your Echinacea (Coneflower) seedlings outdoors around Saturday, May 9, 2026, about 2 weeks after your last frost date.