2026 Planting Guide
Spring cropWhen to Plant Potatoes in Wisconsin
Complete guide to growing potatoes in Wisconsin 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 potatoes growing season in Wisconsin. Red diamond markers indicate frost date boundaries.
Quick Facts
Min. Soil Temp
45°F (7°C) minimum
Growing Period
80-120 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 potatoes in Wisconsin.
January - March
Off-seasonCover crop planting, soil testing, equipment maintenance, and planning for next season.
April - May
PlantPrepare soil, apply starter fertilizer, and sow seeds at recommended depth and spacing.
June - August
Grow & MonitorIrrigate as needed, scout for pests, apply side-dress fertilizer, and manage weeds.
September - October
HarvestCheck maturity indicators, schedule equipment, harvest at optimal moisture content.
November - December
Off-seasonCover crop planting, soil testing, equipment maintenance, and planning for next season.
Best Potatoes Varieties for Wisconsin
These varieties have proven performance in Wisconsin's climate and soil conditions. Always source certified seed from reputable dealers.
| # | Variety | Best For |
|---|---|---|
| 1 | Russet Burbank | Wisconsin climate |
| 2 | Snowden | Wisconsin climate |
| 3 | Atlantic | Wisconsin climate |
| 4 | Red Norland | Wisconsin climate |
Growing Tips for Wisconsin
Region-specific advice from agricultural extension services and experienced Wisconsin farmers.
Central Sands region — irrigated production for processing
Groundwater use is regulated — efficient irrigation essential
Late blight can devastate in humid years — scout and spray
Pest & Disease Watch
Monitor for these threats throughout the growing season. Integrated Pest Management (IPM) is recommended.
Colorado potato beetle
Scout regularly and use integrated pest management
Aphids
Scout regularly and use integrated pest management
Late blight
Scout regularly and use integrated pest management
Wireworms
Scout regularly and use integrated pest management
Potato tuberworm
Scout regularly and use integrated pest management
Companion Planting
These plants grow well alongside potatoes, 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 potatoes in Wisconsin?
The optimal planting window for potatoes in Wisconsin is April 20 to May 15. Soil temperature should reach at least 45°F (7°C) minimum before planting. The total growing period is 80-120 days.
What varieties of potatoes grow best in Wisconsin?
The best varieties for Wisconsin include Russet Burbank, Snowden, Atlantic, Red Norland. These varieties are adapted to local climate and soil conditions and have proven performance records.
When can I harvest potatoes in Wisconsin?
The harvest window for potatoes in Wisconsin is typically September 1 to October 15. The crop takes 80-120 days from planting to reach maturity.
Get planting reminders for Potatoes in Wisconsin
Sign up for free alerts when it's time to plant, fertilize, and harvest.
Data Sources
Data sourced from USDA NASS Crop Planting Dates, Wisconsin 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.