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When to Plant Sweet Potato in Austin, Texas (78708)

Location

Austin, Texas

ZIP Code

78708

USDA Zone

9a

Last Frost

Friday, February 20, 2026

📅 Planting Calendar

Direct Sow Outdoors Friday, February 20, 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 Austin?

Get your seeds now so they're ready by Friday, February 20, 2026.

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🤝 Good Companions

OkraDillThyme

⚠️ Avoid Planting Near

SquashSunflower

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Growing Sweet Potato in Zone 9a

Sweet Potato (Ipomoea batatas) is a popular garden vegetable. In Austin, Texas, which is in USDA Hardiness Zone 9a, you should direct sow seeds around Friday, February 20, 2026.

Your average last frost date is Friday, February 20, 2026. Sweet Potato grows well when direct sown, as it doesn't transplant well or germinates quickly outdoors.