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How to Grow Potatoes in Containers

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Learn how to cultivate a bountiful potato harvest even without a traditional garden plot. This guide is perfect for urban gardeners or those with limited space who want to master the art of container growing. You will discover how to properly prepare your pots and seed potatoes to ensure a healthy, productive crop.

Safety Warnings

  • If using a drill on ceramic pots, always wear safety goggles to prevent injury from shards.

Tools Needed

Drill — Standard power drill with bits suitable for plastic or ceramic
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Watering can — Standard garden capacity
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Materials

Seed potatoes — Chemical- and disease-free certified seed tubers(4-6 tubers)
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Garden container — Large pot, grow bag, or wooden barrel (at least 10-20 gallons) with drainage holes(1 unit)
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Potting soil — Lightweight, sterile commercial potting mix(As needed to fill container)
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General-purpose compost — Organic nutrient-rich compost(As needed)
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Steps

1
Prepare your container by ensuring it has adequate drainage holes in the bottom. If using a barrel or plastic pot, use a drill to create holes approximately 6 inches apart. To further improve drainage and air circulation, elevate the container on 1-3 cinder blocks or pot feet.
Tip: Avoid using black plastic barrels as they can absorb too much sunlight and overheat the potatoes.
drill holes Plastic Pot Cinder Block Cross-section · Elevate pot to ensure air circulation and drainage
2
Prepare the seed potatoes by allowing them to sprout (chit) in a bright, cool, frost-free place for about a week. If tubers are larger than a golf ball, cut them into 2-inch pieces, ensuring each piece has at least 1-2 healthy eyes. Let cut pieces dry and callous over for 2-3 days to prevent rot.
Sprout (eye) 2" piece Calloused cut Let dry Cut oversized tubers into pieces with at least one eye; air-dry for 3 days
3
Fill the bottom third of the container with a mixture of potting soil and general-purpose compost. Place the seed potatoes on this base layer approximately 6 inches apart, with the sprouts or eyes facing upward. Ensure potatoes are not touching the edge of the pot.
Tip: For indeterminate varieties, you can plant fewer potatoes to allow more room for tuber growth.
Place tubers Sprouts up Soil mix Container Cross-section: Seed potatoes spaced on a bottom third layer of soil
4
Cover the seed potatoes with 3-6 inches of soil. Water the mixture thoroughly until liquid begins to drain from the bottom of the pot. Place the container in a location that receives 6-8 hours of direct sunlight daily.
5
Maintain consistent moisture by watering whenever the top 2 inches of soil feel dry. Use the finger test to check moisture depth. Once the plant sprouts grow to 6-8 inches tall, begin 'hilling' by adding more soil or compost around the base of the plant, leaving only the top few inches of foliage exposed.
Tip: Consistent watering is critical to prevent potato scab and blossom end rot.
Container Exposed foliage Fresh compost Base soil Hill around stem Cross-section · Add soil up the stem to protect tubers and encourage growth
6
Continue hilling every few weeks as the plant grows until the container is nearly full. If the plant flowers, you may remove the blooms to redirect energy into tuber production. Harvest the potatoes 70-100 days after planting, once the foliage turns yellow and dies back.
add soil Top foliage Soil line Growing plant Hilling · Add soil around the stem to encourage tuber growth

Pro Tips

  • Wait 2-3 weeks after the foliage dies back to harvest for the largest tubers and toughest skins.
  • Do not wash potatoes immediately after harvest; instead, brush off loose dirt and let them cure in a cool, dark place to extend storage life.
  • Remove flowers from the plant to ensure energy is used for producing larger tubers rather than seeds.

When to Call a Professional

If plants show signs of blight or tuber rot despite proper care, consult your local extension office for disease identification.

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