When To Plant Potatoes in Minnesota

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When To Plant Potatoes in Minnesota

Planting Tips for Success with Grow Bags

Potatoes, a staple in many households, are a versatile and nutritious addition to any garden. While Minnesota’s climate can be challenging for potato cultivation, especially due to its cold winters, the use of grow bags offers an innovative solution. In this article, we will explore when and how to plant potatoes in Minnesota using grow bags, ensuring a bountiful harvest of this beloved tuber.

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1. Choosing the Right Time for Planting

The timing of potato planting in Minnesota is crucial, as the state’s climate can be harsh, with cold winters and relatively short growing seasons. To make the most of your potato cultivation in this region, consider the following factors:

– Frost Dates: Minnesota typically experiences the last spring frost around mid May and the first fall frost in late September to early October. It’s essential to plant potatoes after the last spring frost to avoid frost damage to young plants.

– Soil Temperature: Potatoes prefer soil temperatures of around 45-55°F (7-13°C) for optimal growth. Planting when the soil has warmed up sufficiently helps potatoes establish their root systems.

– Grow Bags: If you’re using grow bags for potato cultivation, you have the flexibility to start earlier in the season. Since grow bags can be moved, you can place them in a sunnier location or indoors when it’s still too cold outside. This allows for an earlier planting date, even before the last spring frost.

2. Choosing Potato Varieties

When planting potatoes In Minnesota, it’s advisable to select potato varieties that are suitable for the climate and have shorter growing seasons. Some cold-hardy varieties include:

– Norland: A red-skinned, early-season variety that matures in about 70-90 days.

– Yukon Gold: Known for its buttery flavor and versatility, it’s a mid-season variety, usually maturing in 80-100 days.

– Kennebec: A widely grown variety in cooler climates, it matures in about 90-100 days.

– Caribe: A purple-skinned, early-season potato that matures in approximately 70-80 days.

3. Preparing Grow Bags

When using grow bags for potato planting potatoes in Minnesota, it’s essential to prepare the bags adequately:

– Select Appropriate Grow Bags: Choose 10- to 15-gallon grow bags for potatoes, ensuring they have proper drainage holes. The larger the bag, the more space for potato growth.

– Soil Mix: Use a well-draining, nutrient-rich potting mix, or create your own mix with compost, peat moss, and vermiculite. Fill the grow bags to about one-third full.

– Chitting Potatoes: Chitting involves allowing seed potatoes to sprout before planting. Place the seed potatoes in a cool, light location a few weeks before planting. This encourages early growth and can lead to a more substantial potato harvest.

4. Planting Potatoes in Grow Bags

Planting potatoes in grow bags is straightforward and offers the advantage of mobility. Follow these steps for a successful planting:

– Layer of Soil: Add a layer of soil (around 4-6 inches) to the bottom of the grow bag.

– Plant Seed Potatoes: Place the chitted seed potatoes, with the sprouts facing up, on top of the soil layer. Space them evenly to allow for growth. For a 10-gallon grow bag, you can typically plant 3-4 seed potatoes.

– Cover with Soil: Cover the seed potatoes with another 4-6 inches of soil, leaving some space at the top of the grow bag.

– Water Thoroughly: Water the grow bag well after planting to ensure that the soil is evenly moist.

5. Care and Maintenance

Potatoes in grow bags require regular care to thrive. Here are some key considerations:

– Sunlight: Place the grow bags in a location that receives at least 6-8 hours of sunlight each day. Ensure that the bags are in a sunny spot or can be moved to catch the sun.

– Watering: Keep the soil consistently moist, but avoid waterlogged conditions, which can lead to rot. Water when the top inch of the soil feels dry.

– Fertilizing: Potatoes benefit from a balanced fertilizer. Apply a granular, slow-release fertilizer when planting and follow up with additional applications during the growing season.

– Hilling: As your potato plants grow, periodically add more soil or mulch to the grow bags to cover the plants. This process, known as hilling, encourages the development of more potatoes.

– Pest and Disease Management: Keep an eye out for common potato pests like aphids, Colorado potato beetles, and fungal diseases. Consider using organic pest control methods to protect your crop.

– Pruning: Trim any yellowing or dead leaves to encourage air circulation and prevent diseases.

6. Harvesting Potatoes

Potato harvest times depend on the variety, but you can typically start harvesting when the plants flower or when the foliage begins to die back. To harvest your potatoes:

– Gently Dump the Bag: Turn the grow bag over or carefully dump it onto a tarp or soft surface to avoid damaging the potatoes.

– Collect the Potatoes: Dig through the soil to collect your potatoes. Be careful not to bruise or damage the tubers.

– Cure the Potatoes: Allow your potatoes to cure by placing them in a cool, dark, and well-ventilated area for about two weeks. This helps the skins harden and prolongs their storage life.

– Storage: Store your cured potatoes in a cool, dry, and dark place. Potatoes can be stored for several months if kept in suitable conditions.


Planting potatoes in Minnesota may seem challenging due to the state’s climate, but with the use of grow bags, it becomes a manageable and rewarding endeavor. The key to successful potato cultivation in this region is selecting appropriate varieties, timing your planting right, and providing care and maintenance. Grow bags offer the advantage of mobility, allowing you to control the growing conditions for your potatoes. With the right techniques and a little patience, you can enjoy a bountiful harvest of fresh and delicious potatoes, even in Minnesota’s climate. So, don’t let the cold winters deter you; start planting your potatoes in grow bags and savor the rewards at harvest time.