When to Plant Sweet Potato in Pasadena, California (91105)

Location

Pasadena, California

ZIP Code

91105

USDA Zone

10a

Last Frost

Sunday, January 25, 2026

📅 Planting Calendar

Direct Sow Outdoors Sunday, January 25, 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 Pasadena?

Get your seeds now so they're ready by Sunday, January 25, 2026.

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🤝 Good Companions

OkraDillThyme

⚠️ Avoid Planting Near

SquashSunflower

Other Plants for Pasadena

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Growing Sweet Potato in Zone 10a

Sweet Potato (Ipomoea batatas) is a popular garden vegetable. In Pasadena, California, which is in USDA Hardiness Zone 10a, you should direct sow seeds around Sunday, January 25, 2026.

Your average last frost date is Sunday, January 25, 2026. Sweet Potato grows well when direct sown, as it doesn't transplant well or germinates quickly outdoors.