When to Plant Echinacea (Coneflower) in Thief River Falls, Minnesota (56701)

Location

Thief River Falls, Minnesota

ZIP Code

56701

USDA Zone

Last Frost

Friday, May 15, 2026

📅 Planting Calendar

Start Seeds Indoors Friday, March 6, 2026

Transplant Outdoors Friday, May 29, 2026

Pro Tip: Start Echinacea (Coneflower) seeds indoors 10 weeks before your last frost date, then transplant outdoors around Friday, May 29, 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 Thief River Falls?

Get your seeds now so they're ready by Friday, March 6, 2026.

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Growing Echinacea (Coneflower) in Zone 4a

Echinacea (Coneflower) (Echinacea purpurea) is a popular garden vegetable. In Thief River Falls, Minnesota, which is in USDA Hardiness Zone 4a, you should start seeds indoors around Friday, March 6, 2026.

Your average last frost date is Friday, May 15, 2026. Plan to transplant your Echinacea (Coneflower) seedlings outdoors around Friday, May 29, 2026, about 2 weeks after your last frost date.