Can You Grow Potatoes Year-Round in a Greenhouse?

Climate Control for Year-Round Potato Production

Growing potatoes in a greenhouse allows you to control the climate and create a micro-environment that is conducive to year-round production. To achieve this, you will need to maintain a consistent temperature between 40°F and 50°F (4°C and 10°C) during the winter months and between 60°F and 70°F (15°C and 21°C) during the summer months. This temperature range will promote healthy tuber formation and prevent the potatoes from sprouting and becoming unusable.

Optimal Lighting for Year-Round Potato Production

Potatoes require a period of darkness to form tubers, but they also need light to grow. In a greenhouse, you can use blackout materials to create a 14-hour day and 10-hour night cycle, which will promote tuber formation. Alternatively, you can use LED grow lights to provide supplemental light during the winter months when natural light is scarce.

Year-Round Potato Production Techniques

To grow potatoes year-round in a greenhouse, you can use a technique called “forced earthing.” This involves planting seed potatoes in a cold frame or unheated greenhouse in the spring, and then transferring the seedlings to a heated greenhouse in the summer. In the fall, the seedlings are transferred back to the cold frame or unheated greenhouse, where they will form tubers over the winter months. This cycle can be repeated throughout the year, allowing you to harvest potatoes every 2-3 months.