2026 Planting Guide
Spring cropWhen to Plant Tomatoes in Minnesota
Complete guide to growing tomatoes in Minnesota with optimal planting dates, recommended varieties, soil requirements, pest management, and harvest timing. Data sourced from USDA and state extension services.
Monthly Planting Calendar
Visual overview of the tomatoes growing season in Minnesota. Red diamond markers indicate frost date boundaries.
Quick Facts
Min. Soil Temp
60°F (16°C) minimum
Growing Period
65-85 days
From planting to harvest
Last Spring Frost
May 5
Wait until after this date
First Fall Frost
September 28
Harvest before this date
Monthly Task Timeline
Month-by-month guide for managing tomatoes in Minnesota.
January - April
Off-seasonCover crop planting, soil testing, equipment maintenance, and planning for next season.
May - June
PlantPrepare soil, apply starter fertilizer, and sow seeds at recommended depth and spacing.
July
Grow & MonitorIrrigate as needed, scout for pests, apply side-dress fertilizer, and manage weeds.
August - September
HarvestCheck maturity indicators, schedule equipment, harvest at optimal moisture content.
October - December
Off-seasonCover crop planting, soil testing, equipment maintenance, and planning for next season.
Best Tomatoes Varieties for Minnesota
These varieties have proven performance in Minnesota's climate and soil conditions. Always source certified seed from reputable dealers.
| # | Variety | Best For |
|---|---|---|
| 1 | Early Girl | Minnesota climate |
| 2 | Celebrity | Minnesota climate |
| 3 | Defiant PhR | Minnesota climate |
| 4 | Glacier | Minnesota climate |
Growing Tips for Minnesota
Region-specific advice from agricultural extension services and experienced Minnesota farmers.
Short season — choose 65-75 day varieties
Wall-o-Water or row covers for early transplanting
Late blight — scout in humid August weather
Pest & Disease Watch
Monitor for these threats throughout the growing season. Integrated Pest Management (IPM) is recommended.
Tomato hornworm
Scout regularly and use integrated pest management
Whiteflies
Scout regularly and use integrated pest management
Aphids
Scout regularly and use integrated pest management
Late blight
Scout regularly and use integrated pest management
Fusarium wilt
Scout regularly and use integrated pest management
Companion Planting
These plants grow well alongside tomatoes, improving pest control, pollination, and nutrient availability.
Frost Dates
Last Spring Frost
May 5
Wait until after this date before planting frost-sensitive crops outdoors.
First Fall Frost
September 28
Plan to complete harvest of warm-season crops before this date arrives.
Frequently Asked Questions
When is the best time to plant tomatoes in Minnesota?
The optimal planting window for tomatoes in Minnesota is May 15 to June 5. Soil temperature should reach at least 60°F (16°C) minimum before planting. The total growing period is 65-85 days.
What varieties of tomatoes grow best in Minnesota?
The best varieties for Minnesota include Early Girl, Celebrity, Defiant PhR, Glacier. These varieties are adapted to local climate and soil conditions and have proven performance records.
When can I harvest tomatoes in Minnesota?
The harvest window for tomatoes in Minnesota is typically August 1 to September 30. The crop takes 65-85 days from planting to reach maturity.
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Data Sources
Data sourced from USDA NASS Crop Planting Dates, Minnesota Cooperative Extension Service, and NOAA frost date records. Last updated: March 2026.
Planting dates are averages and may vary by county, elevation, and local microclimate. Always consult your local extension office for the most precise recommendations.