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Growing French Gray (Griselle) in Illinois

Allium cepa 'French Gray (Griselle)'

Humid ContinentalZones 5, 6, 7155-200 day season

🏛️ Illinois Growing Overview

Climate
Humid Continental
Primary Zone
Zone 5
Last Frost Range
April 15 - May 10
First Frost Range
October 5 - October 25
Famous Illinois crops: Corn, Soybeans, Pumpkins, Sweet corn, Hogs

📍 Zone Suitability in Illinois

✓ Best Zones for French Gray (Griselle)

Zone 5160 days

This variety matures in 90 days, well within Zone 5's 160-day growing season.

Zone 6185 days

This variety matures in 90 days, well within Zone 6's 185-day growing season.

Zone 7210 days

This variety matures in 90 days, well within Zone 7's 210-day growing season.

⚠️ Illinois Growing Challenges

⚠️Variable spring weather
⚠️Humid summers
⚠️Corn rootworm
⚠️Japanese beetles

✓ Illinois Growing Advantages

✓World-class prairie soil
✓Adequate rainfall
✓Strong extension support

📊 French Gray (Griselle) Quick Facts

Days to Maturity
90-120
Difficulty
intermediate
Season
summer
Type
OP

🎓 Illinois Extension Resources

For local, research-based growing information, visit your state's Cooperative Extension Service:

Visit Illinois Extension →

📍 View French Gray (Griselle) Guide for Other States

CaliforniaTexasFloridaNew YorkPennsylvaniaOhioGeorgiaNorth CarolinaMichiganIllinoisWashingtonOregon

🌱 Other Onion Varieties for Illinois

Ailsa Craig
105-125 days
Ambition (F1)
90-120 days
Cipollini Red
80-95 days
Cipollini Yellow
80-95 days
Conservor (F1)
90-120 days
Copra
104-114 days

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