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When to Plant Cosmos in Allakaket, Alaska (99720)

Location

Allakaket, Alaska

ZIP Code

99720

USDA Zone

1a

Last Frost

Monday, June 15, 2026

📅 Planting Calendar

Direct Sow Outdoors Monday, June 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 Allakaket?

Get your seeds now so they're ready by Monday, June 15, 2026.

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Other Plants for Allakaket

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Growing Cosmos in Zone 1a

Cosmos (Cosmos bipinnatus) is a popular garden vegetable. In Allakaket, Alaska, which is in USDA Hardiness Zone 1a, you should direct sow seeds around Monday, June 15, 2026.

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