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When to Plant Dahlia in Zone 2A

USDA Zone

2A

Cities Covered

27

Avg Last Frost

Monday, June 1, 2026

Plant Type

Indoor Start

📅 Planting Calendar for Zone 2A

Start Seeds Indoors Monday, April 20, 2026
Transplant Outdoors Monday, June 8, 2026

Pro Tip: Start Dahlia seeds indoors 6 weeks before your last frost date for best results.

🌿 Plant Details

Scientific Name Dahlia pinnata
Days to Maturity 90 days
Sun Requirements Full Sun (6-8 hours)
Plant Spacing 18" apart

Cities in Zone 2A

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Growing Dahlia in USDA Zone 2A

Dahlia (Dahlia pinnata) grows well in USDA Hardiness Zone 2A. This zone includes cities like Anchorage, Takotna, Eielson Afb and 24 more.

The average last frost date for Zone 2A is around Monday, June 1, 2026. For best results, start your Dahlia seeds indoors around Monday, April 20, 2026, then transplant outdoors around Monday, June 8, 2026.

Expect to harvest your Dahlia approximately 90 days after planting.