When to Plant Jalapeño Pepper in Lothair, Montana (59461)

Location

Lothair, Montana

ZIP Code

59461

USDA Zone

Last Frost

Friday, May 15, 2026

📅 Planting Calendar

Start Seeds Indoors Friday, March 6, 2026

Transplant Outdoors Friday, May 29, 2026

Pro Tip: Start Jalapeño Pepper seeds indoors 10 weeks before your last frost date, then transplant outdoors around Friday, May 29, 2026.

🌿 Plant Details

Scientific Name Capsicum annuum

Days to Maturity 75 days

Mature Height 24-36"

Spread 18"

Type Bush

Fruit Size Small (2-3 inches)

☀️ Growing Requirements

☀️

Sun

Full Sun (6-8 hours)

💧

Water

Moderate

↔️

Spacing

18" apart

🌱

Planting Depth

0.25" deep

Seeds typically germinate in 7-14 days

Ready to Plant Jalapeño Pepper in Lothair?

Get your seeds now so they're ready by Friday, March 6, 2026.

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Growing Jalapeño Pepper in Zone 4a

Jalapeño Pepper (Capsicum annuum) is a popular garden vegetable. In Lothair, Montana, which is in USDA Hardiness Zone 4a, you should start seeds indoors around Friday, March 6, 2026.

Your average last frost date is Friday, May 15, 2026. Plan to transplant your Jalapeño Pepper seedlings outdoors around Friday, May 29, 2026, about 2 weeks after your last frost date.