When to Plant Artichoke in Guernsey, Iowa (52221)

Location

Guernsey, Iowa

ZIP Code

52221

USDA Zone

Last Frost

Saturday, April 25, 2026

📅 Your 2026 Planting Dates

Start Seeds Indoors

Saturday, February 28, 2026

Transplant Outdoors

Saturday, May 9, 2026

Based on last frost Saturday, April 25, 2026 · Zone 5b

Pro tip: Start Artichoke seeds indoors 8 weeks before your last frost date, then transplant outdoors around Saturday, May 9, 2026.

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🌿 Plant Details

Scientific Name Cynara scolymus

Days to Maturity 150 days

☀️ Growing Requirements

☀️

Sun

Full Sun

💧

Water

Regular

Seeds typically germinate in 8-21 days

Ready to Plant Artichoke in Guernsey?

Get your seeds now so they're ready by Saturday, February 28, 2026.

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🛠️ Supplies You'll Need

🌱 Seed Starting Trays 🪴 Seed Starting Mix 💡 Grow Lights 🌡️ Heat Mat 🪵 Raised Garden Bed 🌍 Vegetable Garden Soil 🛠️ Hand Trowel Set 🚿 Watering Can

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🌾 Seed Saving Guide

🟡 Moderate

✅ Open-pollinated — seeds grow true to parent

When to Harvest Seed

Allow one head to fully bloom and dry on the plant — the thistle-like flower matures into seeds.

Processing

Let flower head dry completely on the plant, pull apart to find seeds at the base of each feathery strand.

Seed Viability

Up to 5 years when stored cool, dark, and dry.

Pro Tip

Seeds may not grow true to the parent variety — artichokes vary widely from seed. Crown division is more reliable.

Frequently Asked Questions

When should I plant Artichoke in Guernsey, Iowa? +

In Guernsey (Zone 5b), start Artichoke seeds indoors around Saturday, February 28, 2026 and transplant outdoors around Saturday, May 9, 2026.

What is the last frost date for Guernsey, Iowa? +

The average last spring frost date for Guernsey, Iowa (ZIP 52221) is around Saturday, April 25, 2026. This is based on NOAA climate normals for USDA Zone 5b.

How long does Artichoke take to grow? +

Artichoke typically matures in about 150 days from transplanting. In Guernsey, that means you can expect harvest around Saturday, May 9, 2026 plus 150 days.

Should I start Artichoke indoors or direct sow in Iowa? +

Artichoke should be started indoors 8 weeks before your last frost date. In Guernsey, that means starting around Saturday, February 28, 2026.

📚 More Artichoke Planting Guides

🗺️

Artichoke in Iowa

Zone-by-zone breakdown · Full state guide

→ 🌡️

Zone 5b Artichoke Guide

All cities in your zone · Avg dates

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Growing Artichoke in Zone 5b

Artichoke (Cynara scolymus) is a popular garden vegetable. In Guernsey, Iowa, which is in USDA Hardiness Zone 5b, you should start seeds indoors around Saturday, February 28, 2026.

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