When to Plant Marigold in Grand Rapids, Michigan (49599)

Location

Grand Rapids, Michigan

ZIP Code

49599

USDA Zone

Last Frost

Monday, April 20, 2026

📅 Planting Calendar

Start Seeds Indoors Monday, March 9, 2026

Transplant Outdoors Monday, May 4, 2026

Pro Tip: Start Marigold seeds indoors 6 weeks before your last frost date, then transplant outdoors around Monday, May 4, 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 Grand Rapids?

Get your seeds now so they're ready by Monday, March 9, 2026.

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Other Plants for Grand Rapids

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Growing Marigold in Zone 6a

Marigold (Tagetes patula) is a popular garden vegetable. In Grand Rapids, Michigan, which is in USDA Hardiness Zone 6a, you should start seeds indoors around Monday, March 9, 2026.

Your average last frost date is Monday, April 20, 2026. Plan to transplant your Marigold seedlings outdoors around Monday, May 4, 2026, about 2 weeks after your last frost date.