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When to Plant Marigold in Boyd, Montana (59013)

Location

Boyd, Montana

ZIP Code

59013

USDA Zone

5a

Last Frost

Sunday, May 10, 2026

📅 Planting Calendar

Start Seeds Indoors Sunday, March 29, 2026
Transplant Outdoors Sunday, May 24, 2026

Pro Tip: Start Marigold seeds indoors 6 weeks before your last frost date, then transplant outdoors around Sunday, May 24, 2026.

🌿 Plant Details

Scientific Name Tagetes patula
Days to Maturity 50 days
Mature Height 6-24"
Spread 12"
Type Annual

☀️ Growing Requirements

☀️

Sun

Full Sun (6-8 hours)

💧

Water

Moderate (1 inch/week)

↔️

Spacing

12" apart

🌱

Planting Depth

0.25" deep

Seeds typically germinate in 5-10 days

Ready to Plant Marigold in Boyd?

Get your seeds now so they're ready by Sunday, March 29, 2026.

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🤝 Good Companions

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Other Plants for Boyd

Growing Marigold in Zone 5a

Marigold (Tagetes patula) is a popular garden vegetable. In Boyd, Montana, which is in USDA Hardiness Zone 5a, you should start seeds indoors around Sunday, March 29, 2026.

Your average last frost date is Sunday, May 10, 2026. Plan to transplant your Marigold seedlings outdoors around Sunday, May 24, 2026, about 2 weeks after your last frost date.