2026 Planting Guide
Winter cropWhen to Plant Potatoes in California
Complete guide to growing potatoes in California 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 California. Red diamond markers indicate frost date boundaries.
Quick Facts
Min. Soil Temp
45°F (7°C) minimum
Growing Period
90-120 days
From planting to harvest
Last Spring Frost
February 15
Wait until after this date
First Fall Frost
December 1
Harvest before this date
Monthly Task Timeline
Month-by-month guide for managing potatoes in California.
January - March
PlantPrepare soil, apply starter fertilizer, and sow seeds at recommended depth and spacing.
April - May
Grow & MonitorIrrigate as needed, scout for pests, apply side-dress fertilizer, and manage weeds.
June - 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 Potatoes Varieties for California
These varieties have proven performance in California's climate and soil conditions. Always source certified seed from reputable dealers.
| # | Variety | Best For |
|---|---|---|
| 1 | White Rose | California climate |
| 2 | Kennebec | California climate |
| 3 | Cal White | California climate |
| 4 | Yukon Gold | California climate |
Growing Tips for California
Region-specific advice from agricultural extension services and experienced California farmers.
Kern and San Joaquin counties — early-season production
Ship to eastern markets when prices are high (spring)
Drip irrigation common for water efficiency
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
February 15
Wait until after this date before planting frost-sensitive crops outdoors.
First Fall Frost
December 1
Plan to complete harvest of warm-season crops before this date arrives.
Frequently Asked Questions
When is the best time to plant potatoes in California?
The optimal planting window for potatoes in California is January 15 to March 15. Soil temperature should reach at least 45°F (7°C) minimum before planting. The total growing period is 90-120 days.
What varieties of potatoes grow best in California?
The best varieties for California include White Rose, Kennebec, Cal White, Yukon Gold. These varieties are adapted to local climate and soil conditions and have proven performance records.
When can I harvest potatoes in California?
The harvest window for potatoes in California is typically June 1 to September 30. The crop takes 90-120 days from planting to reach maturity.
Get planting reminders for Potatoes in California
Sign up for free alerts when it's time to plant, fertilize, and harvest.
Data Sources
Data sourced from USDA NASS Crop Planting Dates, California 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.