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When to Plant Cosmos in White Pine, Michigan (49971)

Location

White Pine, Michigan

ZIP Code

49971

USDA Zone

4b

Last Frost

Tuesday, May 5, 2026

📅 Planting Calendar

Direct Sow Outdoors Tuesday, May 5, 2026

Pro Tip: Sow Cosmos directly outdoors around your last frost date when soil starts to warm.

🌿 Plant Details

Scientific Name Cosmos bipinnatus
Days to Maturity 60 days
Mature Height 24-60"
Spread 18"
Type Annual

☀️ Growing Requirements

☀️

Sun

Full Sun (6-8 hours)

💧

Water

Low-Moderate

↔️

Spacing

18" apart

🌱

Planting Depth

0.25" deep

Seeds typically germinate in 7-14 days

Ready to Plant Cosmos in White Pine?

Get your seeds now so they're ready by Tuesday, May 5, 2026.

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🤝 Good Companions

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Growing Cosmos in Zone 4b

Cosmos (Cosmos bipinnatus) is a popular garden vegetable. In White Pine, Michigan, which is in USDA Hardiness Zone 4b, you should direct sow seeds around Tuesday, May 5, 2026.

Your average last frost date is Tuesday, May 5, 2026. Cosmos grows well when direct sown, as it doesn't transplant well or germinates quickly outdoors.