When to Plant Fennel in Clementon, New Jersey (08021)

Location

Clementon, New Jersey

ZIP Code

08021

USDA Zone

Last Frost

Sunday, April 5, 2026

📅 Your 2026 Planting Dates

Start Seeds Indoors

Sunday, March 8, 2026

Transplant Outdoors

Sunday, March 22, 2026

Based on last frost Sunday, April 5, 2026 · Zone 7b

Pro tip: Start Fennel seeds indoors 4 weeks before your last frost date, then transplant outdoors around Sunday, March 22, 2026.

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🌿 Plant Details

Scientific Name Foeniculum vulgare

Days to Maturity 80 days

☀️ Growing Requirements

☀️

Sun

Full Sun

💧

Water

Regular

Seeds typically germinate in 7-14 days

Ready to Plant Fennel in Clementon?

Get your seeds now so they're ready by Sunday, March 8, 2026.

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🤝 Good Companions

Dill

🤝

Full Companion Planting Guide for Fennel

See which plants help Fennel 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

🟢 Easy

✅ Open-pollinated — seeds grow true to parent

When to Harvest Seed

Harvest umbels when seeds turn gray-green to brown — just before they drop.

Processing

Cut seed heads into a bag, dry 1–2 weeks, thresh to separate seeds.

Seed Viability

Up to 4 years when stored cool, dark, and dry.

Pro Tip

Fennel cross-pollinates with dill — keep at least 300 feet apart or sacrifice one crop when saving seed.

Frequently Asked Questions

When should I plant Fennel in Clementon, New Jersey? +

In Clementon (Zone 7b), start Fennel seeds indoors around Sunday, March 8, 2026 and transplant outdoors around Sunday, March 22, 2026.

What is the last frost date for Clementon, New Jersey? +

The average last spring frost date for Clementon, New Jersey (ZIP 08021) is around Sunday, April 5, 2026. This is based on NOAA climate normals for USDA Zone 7b.

How long does Fennel take to grow? +

Fennel typically matures in about 80 days from transplanting. In Clementon, that means you can expect harvest around Sunday, March 22, 2026 plus 80 days.

Should I start Fennel indoors or direct sow in New Jersey? +

Fennel should be started indoors 4 weeks before your last frost date. In Clementon, that means starting around Sunday, March 8, 2026.

📚 More Fennel Planting Guides

🗺️

Fennel in New Jersey

Zone-by-zone breakdown · Full state guide

→ 🌡️

Zone 7b Fennel Guide

All cities in your zone · Avg dates

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Other Plants for Clementon

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Growing Fennel in Zone 7b

Fennel (Foeniculum vulgare) is a popular garden vegetable. In Clementon, New Jersey, which is in USDA Hardiness Zone 7b, you should start seeds indoors around Sunday, March 8, 2026.

Your average last frost date is Sunday, April 5, 2026. Plan to transplant your Fennel seedlings outdoors around Sunday, March 22, 2026, about -2 weeks after your last frost date.