When to Plant Dahlia in Circle, Alaska (99733)

Location

Circle, Alaska

ZIP Code

99733

USDA Zone

Last Frost

Monday, June 15, 2026

📅 Planting Calendar

Start Seeds Indoors Monday, May 4, 2026

Transplant Outdoors Monday, June 22, 2026

Pro Tip: Start Dahlia seeds indoors 6 weeks before your last frost date, then transplant outdoors around Monday, June 22, 2026.

🌿 Plant Details

Scientific Name Dahlia pinnata

Days to Maturity 90 days

Mature Height 18-60"

Spread 18"

☀️ Growing Requirements

☀️

Sun

Full Sun (6-8 hours)

💧

Water

Regular (1-2 inches/week)

↔️

Spacing

18" apart

🌱

Planting Depth

4" deep

Seeds typically germinate in 7-14 days

Ready to Plant Dahlia in Circle?

Get your seeds now so they're ready by Monday, May 4, 2026.

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Other Plants for Circle

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Growing Dahlia in Zone 1a

Dahlia (Dahlia pinnata) is a popular garden vegetable. In Circle, Alaska, which is in USDA Hardiness Zone 1a, you should start seeds indoors around Monday, May 4, 2026.

Your average last frost date is Monday, June 15, 2026. Plan to transplant your Dahlia seedlings outdoors around Monday, June 22, 2026, about 1 weeks after your last frost date.