When to Plant Shallot in College Springs, Iowa (51637)
Location
College Springs, Iowa
ZIP Code
51637
USDA Zone
5b
Last Frost
Saturday, April 25, 2026
📅 Planting Calendar
Start Seeds Indoors Saturday, February 28, 2026
Transplant Outdoors Saturday, May 9, 2026
Pro Tip: Start Shallot seeds indoors 8 weeks before your last frost date for best results.
🌿 Plant Details
Scientific Name Allium cepa
Days to Maturity 7 days
☀️ Growing Requirements
☀️
Sun
Full Sun
💧
Water
Regular
Seeds typically germinate in 8-21 days
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Growing Shallot in Zone 5b
Shallot (Allium cepa) is a popular garden vegetable. In College Springs, Iowa, which is in USDA Hardiness Zone 5b, you should start seeds indoors around Saturday, February 28, 2026.
Your average last frost date is Saturday, April 25, 2026. Plan to transplant your Shallot seedlings outdoors around Saturday, May 9, 2026, about 2 weeks after your last frost date.