When to Plant Celery in Wyoming, Illinois (61491)

Location

Wyoming, Illinois

ZIP Code

61491

USDA Zone

Last Frost

Saturday, April 25, 2026

📅 Your 2026 Planting Dates

Start Seeds Indoors

Saturday, February 14, 2026

Transplant Outdoors

Saturday, May 9, 2026

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

Pro tip: Start Celery seeds indoors 10 weeks before your last frost date, then transplant outdoors around Saturday, May 9, 2026.

🌿 Plant Details

Scientific Name Apium graveolens

Days to Maturity 130 days

☀️ Growing Requirements

☀️

Sun

Full Sun

💧

Water

Regular

Seeds typically germinate in 8-28 days

Ready to Plant Celery in Wyoming?

Get your seeds now so they're ready by Saturday, February 14, 2026.

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🤝 Good Companions

CosmosDaisySnapDragon

⚠️ Avoid Planting Near

CornAster

🤝

Full Companion Planting Guide for Celery

See which plants help Celery 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

🔴 Difficult

✅ Open-pollinated — seeds grow true to parent

When to Harvest Seed

Celery is biennial — it seeds in year 2. Harvest umbels just before seeds shatter in summer.

Processing

Cut seed heads into bags, dry 2 weeks, thresh to release seeds.

Seed Viability

Up to 3 years when stored cool, dark, and dry.

Pro Tip

In cold climates, dig celery in fall, store roots in a root cellar, and replant in spring for year-2 flowering.

Frequently Asked Questions

When should I plant Celery in Wyoming, Illinois? +

In Wyoming (Zone 5b), start Celery seeds indoors around Saturday, February 14, 2026 and transplant outdoors around Saturday, May 9, 2026.

What is the last frost date for Wyoming, Illinois? +

The average last spring frost date for Wyoming, Illinois (ZIP 61491) is around Saturday, April 25, 2026. This is based on NOAA climate normals for USDA Zone 5b.

How long does Celery take to grow? +

Celery typically matures in about 130 days from transplanting. In Wyoming, that means you can expect harvest around Saturday, May 9, 2026 plus 130 days.

Should I start Celery indoors or direct sow in Illinois? +

Celery should be started indoors 10 weeks before your last frost date. In Wyoming, that means starting around Saturday, February 14, 2026.

📚 More Celery Planting Guides

🗺️

Celery in Illinois

Zone-by-zone breakdown · Full state guide

→ 🌡️

Zone 5b Celery Guide

All cities in your zone · Avg dates

→

Other Plants for Wyoming

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Growing Celery in Zone 5b

Celery (Apium graveolens) is a popular garden vegetable. In Wyoming, Illinois, which is in USDA Hardiness Zone 5b, you should start seeds indoors around Saturday, February 14, 2026.

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