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When to Plant Sweet Potato in Charles City, Iowa (50616)

Location

Charles City, Iowa

ZIP Code

50616

USDA Zone

5a

Last Frost

Sunday, May 10, 2026

📅 Planting Calendar

Direct Sow Outdoors Sunday, March 29, 2026

Pro Tip: Sweet Potato can be directly sown outdoors. Plant 6 weeks before your last frost date.

🌿 Plant Details

Scientific Name Ipomoea batatas
Days to Maturity 100 days

☀️ Growing Requirements

☀️

Sun

Full Sun

💧

Water

Regular

Seeds typically germinate in 7-14 days

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Growing Sweet Potato in Zone 5a

Sweet Potato (Ipomoea batatas) is a popular garden vegetable. In Charles City, Iowa, which is in USDA Hardiness Zone 5a, you should direct sow seeds around Sunday, March 29, 2026.

Your average last frost date is Sunday, May 10, 2026. Sweet Potato grows well when direct sown, as it doesn't transplant well or germinates quickly outdoors.