When to Plant Cantaloupe in Simms, Montana (59477)

Location

Simms, Montana

ZIP Code

59477

USDA Zone

Last Frost

Tuesday, May 5, 2026

📅 Planting Calendar

Start Seeds Indoors Tuesday, April 7, 2026

Transplant Outdoors Tuesday, May 19, 2026

Pro Tip: Start Cantaloupe seeds indoors 4 weeks before your last frost date, then transplant outdoors around Tuesday, May 19, 2026.

🌿 Plant Details

Scientific Name Cucumis melo var. cantalupensis

Days to Maturity 80 days

Mature Height 12-18"

Spread 48"

Type Vine

Fruit Size Medium-Large (3-8 lbs)

☀️ Growing Requirements

☀️

Sun

Full Sun (8+ hours)

💧

Water

Regular, reduce near harvest

↔️

Spacing

48" apart

🌱

Planting Depth

1" deep

Seeds typically germinate in 5-10 days

Ready to Plant Cantaloupe in Simms?

Get your seeds now so they're ready by Tuesday, April 7, 2026.

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🤝 Good Companions

CornSunflowerMarigold

⚠️ Avoid Planting Near

CucumberPotato

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Growing Cantaloupe in Zone 4b

Cantaloupe (Cucumis melo var. cantalupensis) is a popular garden vegetable. In Simms, Montana, which is in USDA Hardiness Zone 4b, you should start seeds indoors around Tuesday, April 7, 2026.

Your average last frost date is Tuesday, May 5, 2026. Plan to transplant your Cantaloupe seedlings outdoors around Tuesday, May 19, 2026, about 2 weeks after your last frost date.