How do I start growing potatoes from a potato?
Written by
Olivia Mitchell
Reviewed by
Prof. Samuel Fitzgerald, Ph.D.Learning how to grow potatoes begins with avoiding grocery store tubers, which can insidiously introduce nasties into your soil. I learned this the hard way after my first crop turned to mush. Only use certified seed potatoes. They miss many of the bad things that Allegheny taught me to avoid in my crop (and will in your garden), which are strictly monitored for diseases.
Cutting Technique
- Cut potatoes into egg-sized pieces with 2-3 eyes each
- Use a clean knife dipped in rubbing alcohol between cuts
- Ensure each piece weighs 1.5-2 ounces (42-57 grams)
Curing Process
- Spread pieces in single layer on newspaper
- Keep at 60-70°F (15-21°C) for 48 hours
- Allow cuts to form protective suberin layer
Plant your cured pieces eyes up in loose soil. Space them 12 inches (30 cm) apart and bury them at a depth of 4 inches (10 cm). Water immediately after planting. I 'finger-measure' to check for moisture once a week. You should be able to feel damp earth down to your second knuckle. Never let the ground get dry at all while the sprouts are 'running'.
Watch for sprouts in 10-14 days. When plants are about 8 inches (20 cm) high, hill up earth around them. This shields them from sun exposure, preventing greening, which may be toxic. I hill up using compost mixed with straw. I find this has the added benefit of retaining moisture and acting as a weed deterrent. New potatoes can be dug once flowers are observed.
Rotate potato locations annually to minimize the risk of soil-borne diseases. Never plant where you grew tomatoes or peppers last year. Store your harvest in a mesh bag in a cool, dark location, such as an unused closet. Aim for around 45°F (7°C). If they were properly cured, they would last months. Post pictures of your creative crops for your fellow gardeners to see online.
Read the full article: How to Grow Potatoes: Essential Gardening Guide
