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When to Plant Potatoes by Hardiness Zones and States

When to Plant Potatoes by Hardiness Zones and States

Potatoes are a staple in many gardens and households due to their ease of growth and versatility in the kitchen. Knowing when to plant potatoes can be key to ensuring a successful harvest.

In the US, planting times for potatoes vary according to USDA hardiness zones. Each zone has a different climate, which affects when you should plant, grow, and harvest your potatoes.

When to Plant Potatoes by Zones

Zones 1-3

  • Planting: Late April to early May. It’s important to wait until the soil temperature has reached at least 45°F.
  • Growing: During the summer months.
  • Harvesting: From late August to early September, before the first frost hits.

Cold Climates – Zones 4-5

  • Planting: Early to mid-April. Make sure the soil temperature is at least 45°F.
  • Growing: Throughout the late spring and summer.
  • Harvesting: Early to mid-September.

Moderate Climates – Zones 6-7

  • Planting: Late March to early April.
  • Growing: Spring to early summer.
  • Harvesting: Late July to early August for early varieties and late September for late-season varieties.

Warm Climates – Zones 8-9

  • Planting: Mid to late February or early March for a spring crop and again in August for a fall crop.
  • Growing: Spring and fall, avoiding the hottest summer months.
  • Harvesting: Late June for spring crops and December for fall crops.

Hot Climates – Zones 10-11

  • Planting: Late January to early February for a spring crop and again in September for a fall/winter crop.
  • Growing: During the cooler months, avoiding the peak of summer heat.
  • Harvesting: May for spring crops and February of the following year for fall/winter crops.

Tips for Growing Potatoes Successfully:

  1. Soil Preparation: Potatoes prefer well-draining soil with a slightly acidic pH of 5.0 to 7.0.
  2. Sunlight: Ensure they get at least 6-8 hours of sunlight daily.
  3. Watering: Keep the soil consistently moist but not waterlogged.
  4. Hilling: As potato plants grow, pile soil around the base of the plant to prevent sunlight from reaching the tubers, which can cause them to turn green and become toxic.
  5. Pest and Disease Management: Be on the lookout for common pests like potato beetles and diseases like blight. Rotate your crops to prevent disease buildup.

When to Plant Potatoes by State

StatesZonesWhen to PlantWhen to Harvest
Alabama7-9Late March-April, AugustLate July-September, December
Alaska1-4Late April-MayLate August-September
Arizona5-10Early April, SeptemberSeptember, February
Arkansas6-8Late March-AprilLate July-September
California5-11February-April, SeptemberJune-May, February
Colorado3-6Late April-MaySeptember
Connecticut5-7Early to mid-AprilSeptember
Delaware7Late March-AprilLate July-September
Florida8-11February, SeptemberJune, February
Georgia7-9Late March-April, AugustLate July-September, December
Hawaii10-11January, SeptemberMay, February
Idaho4-7AprilSeptember
Illinois5-7Early to mid-AprilSeptember
Indiana5-6Early to mid-AprilSeptember
Iowa4-6AprilSeptember
Kansas5-7Early to mid-AprilSeptember
Kentucky6-7Late March-AprilLate July-September
Louisiana8-10February, AugustJune, December
Maine4-6AprilSeptember
Maryland6-8Late March-AprilLate July-September
Massachusetts5-7Early to mid-AprilSeptember
Michigan4-6AprilSeptember
Minnesota3-5Late April-MaySeptember
Mississippi7-9Late March-April, AugustLate July-September, December
Missouri5-7Early to mid-AprilSeptember
Montana3-5Late April-MaySeptember
Nebraska4-6AprilSeptember
Nevada4-9April, AugustSeptember, December
New Hampshire4-6AprilSeptember
New Jersey6-7Late March-AprilLate July-September
New Mexico5-9Early April, AugustSeptember, December
New York4-7AprilSeptember
North Carolina6-8Late March-AprilLate July-September
North Dakota3-5Late April-MaySeptember
Ohio5-6Early to mid-AprilSeptember
Oklahoma6-8Late March-AprilLate July-September
Oregon4-9April, AugustSeptember, December
Pennsylvania5-7Early to mid-AprilSeptember
Rhode Island6Late March-AprilLate July-September
South Carolina7-9Late March-April, AugustLate July-September, December
South Dakota4-5AprilSeptember
Tennessee6-8Late March-AprilLate July-September
Texas6-10Late March-April, AugustLate July-December
Utah4-8April, AugustSeptember, December
Vermont4-5AprilSeptember
Virginia6-8Late March-AprilLate July-September
Washington5-9Early April, AugustSeptember, December
West Virginia5-7Early to mid-AprilSeptember
Wisconsin3-5Late April-MaySeptember
Wyoming3-6Late April-MaySeptember

This table provides a general guideline based on typical hardiness zones within each state. Some states have wide variations in zones, so always refer to local guidelines and monitor soil temperature for optimal planting conditions.

By understanding the specific needs of your hardiness zone, you can optimize your potato planting schedule and enjoy a bountiful harvest!

You may also enjoy these article on potatoes:

Happy Planting!

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