When to Plant Leek in Altha, Florida (32421)

Location

Altha, Florida

ZIP Code

32421

USDA Zone

Last Frost

Friday, February 20, 2026

📅 Your 2026 Planting Dates

Start Seeds Indoors

Friday, December 12, 2025

Transplant Outdoors

Friday, March 6, 2026

Based on last frost Friday, February 20, 2026 · Zone 9a

Pro tip: Start Leek seeds indoors 10 weeks before your last frost date, then transplant outdoors around Friday, March 6, 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 Altha?

Get your seeds now so they're ready by Friday, December 12, 2025.

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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 Altha, Florida? +

In Altha (Zone 9a), start Leek seeds indoors around Friday, December 12, 2025 and transplant outdoors around Friday, March 6, 2026.

What is the last frost date for Altha, Florida? +

The average last spring frost date for Altha, Florida (ZIP 32421) is around Friday, February 20, 2026. This is based on NOAA climate normals for USDA Zone 9a.

How long does Leek take to grow? +

Leek typically matures in about 120 days from transplanting. In Altha, that means you can expect harvest around Friday, March 6, 2026 plus 120 days.

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

Leek should be started indoors 10 weeks before your last frost date. In Altha, that means starting around Friday, December 12, 2025.

📚 More Leek Planting Guides

🗺️

Leek in Florida

Zone-by-zone breakdown · Full state guide

→ 🌡️

Zone 9a Leek Guide

All cities in your zone · Avg dates

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Other Plants for Altha

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Growing Leek in Zone 9a

Leek (Allium ampeloprasum) is a popular garden vegetable. In Altha, Florida, which is in USDA Hardiness Zone 9a, you should start seeds indoors around Friday, December 12, 2025.

Your average last frost date is Friday, February 20, 2026. Plan to transplant your Leek seedlings outdoors around Friday, March 6, 2026, about 2 weeks after your last frost date.