When to Plant Marigold in Ambrose, North Dakota (58833)

Location

Ambrose, North Dakota

ZIP Code

58833

USDA Zone

Last Frost

Friday, May 15, 2026

📅 Planting Calendar

Start Seeds Indoors Friday, April 3, 2026

Transplant Outdoors Friday, May 29, 2026

Pro Tip: Start Marigold seeds indoors 6 weeks before your last frost date, then transplant outdoors around Friday, May 29, 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 Ambrose?

Get your seeds now so they're ready by Friday, April 3, 2026.

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Growing Marigold in Zone 4a

Marigold (Tagetes patula) is a popular garden vegetable. In Ambrose, North Dakota, which is in USDA Hardiness Zone 4a, you should start seeds indoors around Friday, April 3, 2026.

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