When to Plant Hollyhock in Avon, Minnesota (56310)

Location

Avon, Minnesota

ZIP Code

56310

USDA Zone

Last Frost

Tuesday, May 5, 2026

📅 Planting Calendar

Start Seeds Indoors Tuesday, March 24, 2026

Transplant Outdoors Tuesday, May 19, 2026

Pro Tip: Start Hollyhock seeds indoors 6 weeks before your last frost date, then transplant outdoors around Tuesday, May 19, 2026.

🌿 Plant Details

Scientific Name Alcea rosea

Days to Maturity 365 days

Mature Height 48-96"

Spread 24"

☀️ Growing Requirements

☀️

Sun

Full Sun (6-8 hours)

💧

Water

Moderate (1 inch/week)

↔️

Spacing

18" apart

🌱

Planting Depth

0.25" deep

Seeds typically germinate in 10-14 days

Ready to Plant Hollyhock in Avon?

Get your seeds now so they're ready by Tuesday, March 24, 2026.

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Growing Hollyhock in Zone 4b

Hollyhock (Alcea rosea) is a popular garden vegetable. In Avon, Minnesota, which is in USDA Hardiness Zone 4b, you should start seeds indoors around Tuesday, March 24, 2026.

Your average last frost date is Tuesday, May 5, 2026. Plan to transplant your Hollyhock seedlings outdoors around Tuesday, May 19, 2026, about 2 weeks after your last frost date.