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When to Plant Impatiens in Zone 1B

USDA Zone

1B

Cities Covered

11

Avg Last Frost

Wednesday, June 10, 2026

Plant Type

Indoor Start

📅 Planting Calendar for Zone 1B

Start Seeds Indoors Wednesday, April 1, 2026
Transplant Outdoors Wednesday, June 24, 2026

Pro Tip: Start Impatiens seeds indoors 10 weeks before your last frost date for best results.

🌿 Plant Details

Scientific Name Impatiens walleriana
Days to Maturity 60 days
Sun Requirements Partial to Full Shade (2-4 hours)
Plant Spacing 8" apart

Cities in Zone 1B

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Growing Impatiens in USDA Zone 1B

Impatiens (Impatiens walleriana) grows well in USDA Hardiness Zone 1B. This zone includes cities like Arctic Village, Bettles Field, Chicken and 8 more.

The average last frost date for Zone 1B is around Wednesday, June 10, 2026. For best results, start your Impatiens seeds indoors around Wednesday, April 1, 2026, then transplant outdoors around Wednesday, June 24, 2026.

Expect to harvest your Impatiens approximately 60 days after planting.