When to Plant Spaghetti Squash in Ankeny, Iowa (50021)

Location

Ankeny, Iowa

ZIP Code

50021

USDA Zone

Last Frost

Saturday, April 25, 2026

📅 Planting Calendar

Start Seeds Indoors Saturday, March 28, 2026

Transplant Outdoors Saturday, May 9, 2026

Pro Tip: Start Spaghetti Squash seeds indoors 4 weeks before your last frost date, then transplant outdoors around Saturday, May 9, 2026.

🌿 Plant Details

Scientific Name Cucurbita pepo

Days to Maturity 90 days

Mature Height 12-18"

Spread 60"

Type Vine

Fruit Size Large (4-8 lbs)

☀️ Growing Requirements

☀️

Sun

Full Sun (6-8 hours)

💧

Water

Regular (1 inch/week)

↔️

Spacing

48" apart

🌱

Planting Depth

1" deep

Seeds typically germinate in 5-10 days

Ready to Plant Spaghetti Squash in Ankeny?

Get your seeds now so they're ready by Saturday, March 28, 2026.

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🤝 Good Companions

CornBeanMarigoldNasturtium

⚠️ Avoid Planting Near

Potato

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Growing Spaghetti Squash in Zone 5b

Spaghetti Squash (Cucurbita pepo) is a popular garden vegetable. In Ankeny, Iowa, which is in USDA Hardiness Zone 5b, you should start seeds indoors around Saturday, March 28, 2026.

Your average last frost date is Saturday, April 25, 2026. Plan to transplant your Spaghetti Squash seedlings outdoors around Saturday, May 9, 2026, about 2 weeks after your last frost date.