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Growing Yellow Sweet Spanish in Iowa

Allium cepa 'Yellow Sweet Spanish'

Humid ContinentalZones 4, 5145-175 day season

🏛️ Iowa Growing Overview

Climate
Humid Continental
Primary Zone
Zone 5
Last Frost Range
April 20 - May 15
First Frost Range
September 25 - October 15
Famous Iowa crops: Corn, Soybeans, Hogs, Sweet corn, Pumpkins

📍 Zone Suitability in Iowa

✓ Best Zones for Yellow Sweet Spanish

Zone 4135 days

This variety matures in 110 days, well within Zone 4's 135-day growing season.

Zone 5160 days

This variety matures in 110 days, well within Zone 5's 160-day growing season.

⚠️ Iowa Growing Challenges

⚠️Flooding
⚠️Late spring
⚠️Corn/soybean pests
⚠️Variable weather

✓ Iowa Growing Advantages

✓World-class soil
✓Adequate rainfall
✓Cool nights enhance flavor

📊 Yellow Sweet Spanish Quick Facts

Days to Maturity
110-120
Difficulty
beginner
Season
spring
Type
Heirloom

🎓 Iowa Extension Resources

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

Visit Iowa Extension →

📍 View Yellow Sweet Spanish Guide for Other States

CaliforniaTexasFloridaNew YorkPennsylvaniaOhioGeorgiaNorth CarolinaMichiganIllinoisWashingtonOregon

🌱 Other Onion Varieties for Iowa

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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