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When to Plant Broccoli in Zone 1A

USDA Zone

1A

Cities Covered

5

Avg Last Frost

Monday, June 15, 2026

Plant Type

Indoor Start

📅 Planting Calendar for Zone 1A

Start Seeds Indoors Monday, May 4, 2026
Transplant Outdoors Monday, June 15, 2026

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

🌿 Plant Details

Scientific Name Brassica oleracea var. italica
Days to Maturity 60 days
Sun Requirements Full Sun (6 hours)
Plant Spacing 18" apart

Cities in Zone 1A

Other Plants for Zone 1A

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Growing Broccoli in USDA Zone 1A

Broccoli (Brassica oleracea var. italica) grows well in USDA Hardiness Zone 1A. This zone includes cities like Allakaket, Beaver, Circle and 2 more.

The average last frost date for Zone 1A is around Monday, June 15, 2026. For best results, start your Broccoli seeds indoors around Monday, May 4, 2026, then transplant outdoors around Monday, June 15, 2026.

Expect to harvest your Broccoli approximately 60 days after planting.