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Growing Copra in Wisconsin

Allium cepa 'Copra'

Humid ContinentalZones 3, 4, 5110-160 day season

🏛️ Wisconsin Growing Overview

Climate
Humid Continental
Primary Zone
Zone 4
Last Frost Range
April 25 - June 1
First Frost Range
September 15 - October 15
Famous Wisconsin crops: Cranberries, Potatoes, Sweet corn, Snap beans, Dairy

📍 Zone Suitability in Wisconsin

✓ Best Zones for Copra

Zone 3120 days

This variety matures in 104 days, well within Zone 3's 120-day growing season.

Zone 4135 days

This variety matures in 104 days, well within Zone 4's 135-day growing season.

Zone 5160 days

This variety matures in 104 days, well within Zone 5's 160-day growing season.

⚠️ Wisconsin Growing Challenges

⚠️Cold winters
⚠️Short season
⚠️Variable spring
⚠️Deer pressure

✓ Wisconsin Growing Advantages

✓Dairy-vegetable synergy
✓Clean water
✓Strong local markets

📊 Copra Quick Facts

Days to Maturity
104-114
Difficulty
beginner
Season
spring
Type
F1

🎓 Wisconsin Extension Resources

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

Visit Wisconsin Extension →

📍 View Copra Guide for Other States

CaliforniaTexasFloridaNew YorkPennsylvaniaOhioGeorgiaNorth CarolinaMichiganIllinoisWashingtonOregon

🌱 Other Onion Varieties for Wisconsin

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 (F1)
90-120 days

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