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When to Plant Tomato in Zone 3A

USDA Zone

3A

Cities Covered

25

Avg Last Frost

Monday, May 25, 2026

Plant Type

Indoor Start

📅 Planting Calendar for Zone 3A

Start Seeds Indoors Monday, April 13, 2026
Transplant Outdoors Monday, June 8, 2026

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

🌿 Plant Details

Scientific Name Solanum lycopersicum
Days to Maturity 70 days
Sun Requirements Full Sun (6-8 hours)
Plant Spacing 24" apart

Cities in Zone 3A

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Growing Tomato in USDA Zone 3A

Tomato (Solanum lycopersicum) grows well in USDA Hardiness Zone 3A. This zone includes cities like Embarrass, Soudan, Tower and 22 more.

The average last frost date for Zone 3A is around Monday, May 25, 2026. For best results, start your Tomato seeds indoors around Monday, April 13, 2026, then transplant outdoors around Monday, June 8, 2026.

Expect to harvest your Tomato approximately 70 days after planting.