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When to Plant Sweet Potato in Saint Petersburg, Florida (33708)

Location

Saint Petersburg, Florida

ZIP Code

33708

USDA Zone

10b

Last Frost

Thursday, January 15, 2026

📅 Planting Calendar

Direct Sow Outdoors Thursday, January 15, 2026

Pro Tip: Sow Sweet Potato directly outdoors around your last frost date when soil starts to warm.

🌿 Plant Details

Scientific Name Ipomoea batatas
Days to Maturity 100 days
Mature Height 12-18"
Spread 36"
Type Vine
Fruit Size Medium-Large (6-12 oz per root)

☀️ Growing Requirements

☀️

Sun

Full Sun (8+ hours)

💧

Water

Moderate (reduce as harvest approaches)

↔️

Spacing

12" apart

🌱

Planting Depth

4" deep

Seeds typically germinate in 14-21 days

Ready to Plant Sweet Potato in Saint Petersburg?

Get your seeds now so they're ready by Thursday, January 15, 2026.

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🤝 Good Companions

OkraDillThyme

⚠️ Avoid Planting Near

SquashSunflower

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Growing Sweet Potato in Zone 10b

Sweet Potato (Ipomoea batatas) is a popular garden vegetable. In Saint Petersburg, Florida, which is in USDA Hardiness Zone 10b, you should direct sow seeds around Thursday, January 15, 2026.

Your average last frost date is Thursday, January 15, 2026. Sweet Potato grows well when direct sown, as it doesn't transplant well or germinates quickly outdoors.