When to Plant Leek in Antwerp, Ohio (45813)

Location

Antwerp, Ohio

ZIP Code

45813

USDA Zone

Last Frost

Monday, April 20, 2026

📅 Your 2026 Planting Dates

Start Seeds Indoors

Monday, February 9, 2026

Transplant Outdoors

Monday, May 4, 2026

Based on last frost Monday, April 20, 2026 · Zone 6a

Pro tip: Start Leek seeds indoors 10 weeks before your last frost date, then transplant outdoors around Monday, May 4, 2026.

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🌿 Plant Details

Scientific Name Allium ampeloprasum

Days to Maturity 120 days

☀️ Growing Requirements

☀️

Sun

Full Sun

💧

Water

Regular

Seeds typically germinate in 1-7 days

Ready to Plant Leek in Antwerp?

Get your seeds now so they're ready by Monday, February 9, 2026.

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🤝 Good Companions

CeleryAppleCarrot

⚠️ Avoid Planting Near

Swiss Chard

🤝

Full Companion Planting Guide for Leek

See which plants help Leek thrive, which to keep away, and raised bed layout tips →

🛠️ 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

Biennial — allow flowering in year 2. Harvest seed heads when seeds are black and ripe.

Processing

Cut seed heads into bags when most seeds are black, dry 1 week, thresh gently.

Seed Viability

Up to 2 years when stored cool, dark, and dry.

Pro Tip

Leeks cross-pollinate with onions via insects. Isolate by at least a mile for truly pure seed.

Frequently Asked Questions

When should I plant Leek in Antwerp, Ohio? +

In Antwerp (Zone 6a), start Leek seeds indoors around Monday, February 9, 2026 and transplant outdoors around Monday, May 4, 2026.

What is the last frost date for Antwerp, Ohio? +

The average last spring frost date for Antwerp, Ohio (ZIP 45813) is around Monday, April 20, 2026. This is based on NOAA climate normals for USDA Zone 6a.

How long does Leek take to grow? +

Leek typically matures in about 120 days from transplanting. In Antwerp, that means you can expect harvest around Monday, May 4, 2026 plus 120 days.

Should I start Leek indoors or direct sow in Ohio? +

Leek should be started indoors 10 weeks before your last frost date. In Antwerp, that means starting around Monday, February 9, 2026.

📚 More Leek Planting Guides

🗺️

Leek in Ohio

Zone-by-zone breakdown · Full state guide

→ 🌡️

Zone 6a Leek Guide

All cities in your zone · Avg dates

→

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Growing Leek in Zone 6a

Leek (Allium ampeloprasum) is a popular garden vegetable. In Antwerp, Ohio, which is in USDA Hardiness Zone 6a, you should start seeds indoors around Monday, February 9, 2026.

Your average last frost date is Monday, April 20, 2026. Plan to transplant your Leek seedlings outdoors around Monday, May 4, 2026, about 2 weeks after your last frost date.