When to Plant Cosmos in Fort Fairfield, Maine (04742)

Location

Fort Fairfield, Maine

ZIP Code

04742

USDA Zone

Last Frost

Friday, May 15, 2026

📅 Planting Calendar

Direct Sow Outdoors Friday, May 15, 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 Fort Fairfield?

Get your seeds now so they're ready by Friday, May 15, 2026.

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Other Plants for Fort Fairfield

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Growing Cosmos in Zone 4a

Cosmos (Cosmos bipinnatus) is a popular garden vegetable. In Fort Fairfield, Maine, which is in USDA Hardiness Zone 4a, you should direct sow seeds around Friday, May 15, 2026.

Your average last frost date is Friday, May 15, 2026. Cosmos grows well when direct sown, as it doesn't transplant well or germinates quickly outdoors.