When to Plant Leek in Fairbanks, Alaska (99708)

Location

Fairbanks, Alaska

ZIP Code

99708

USDA Zone

Last Frost

Monday, June 1, 2026

📅 Your 2026 Planting Dates

Start Seeds Indoors

Monday, March 23, 2026

Transplant Outdoors

Monday, June 15, 2026

Based on last frost Monday, June 1, 2026 · Zone 2a

Pro tip: Start Leek seeds indoors 10 weeks before your last frost date, then transplant outdoors around Monday, June 15, 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 Fairbanks?

Get your seeds now so they're ready by Monday, March 23, 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 Fairbanks, Alaska? +

In Fairbanks (Zone 2a), start Leek seeds indoors around Monday, March 23, 2026 and transplant outdoors around Monday, June 15, 2026.

What is the last frost date for Fairbanks, Alaska? +

The average last spring frost date for Fairbanks, Alaska (ZIP 99708) is around Monday, June 1, 2026. This is based on NOAA climate normals for USDA Zone 2a.

How long does Leek take to grow? +

Leek typically matures in about 120 days from transplanting. In Fairbanks, that means you can expect harvest around Monday, June 15, 2026 plus 120 days.

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

Leek should be started indoors 10 weeks before your last frost date. In Fairbanks, that means starting around Monday, March 23, 2026.

📚 More Leek Planting Guides

🗺️

Leek in Alaska

Zone-by-zone breakdown · Full state guide

→ 🌡️

Zone 2a Leek Guide

All cities in your zone · Avg dates

→

Other Plants for Fairbanks

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Growing Leek in Zone 2a

Leek (Allium ampeloprasum) is a popular garden vegetable. In Fairbanks, Alaska, which is in USDA Hardiness Zone 2a, you should start seeds indoors around Monday, March 23, 2026.

Your average last frost date is Monday, June 1, 2026. Plan to transplant your Leek seedlings outdoors around Monday, June 15, 2026, about 2 weeks after your last frost date.