In Northern regions, some gardeners will plant the first crop of early-maturing potatoes in early to mid-April, 6 to 8 weeks before the average last frost date or as soon as the soil can be worked; they can survive some cool weather but the threat of frost is a gamble. These need to stay in the ground longer and require more space to produce a decent crop. You can chit seed potatoes or cut up whole potatoes. This is called “hilling” and it protects the potatoes from the sun, as well as supports the plant. In the latter case, it’s better to chit them before cutting them up. Maintain even moisture throughout the … They start with one water. They must be watered to be able to grow anything. Potatoes need fertile, well-drained soil in full sun. Potatoes prefer cool weather. Farming plots are used to grow certain items. If planted items have their water reduced to zero, the plant will die. When growing potatoes in the ground, plant earlies and salad types in March, 12cm deep and 30cm apart, with 60cm between rows. If your garden soil isn’t sufficient for growing potatoes (4.8 to 5.5 pH) or if there’s loads of rocks and gravel in your soil that’s likely to hinder growth, you may need to use a potato grow bag instead. Planting Potatoes. Plant them 12cm deep and 38cm apart, with 75cm between rows. Bury seed pieces two or three inches deep, about a foot … Each seed potato should be planted 4 inches (10 centimeters) deep. Many gardeners plant them in a trench about eight inches deep. Potatoes will need 8 inches of loose soil below the surface to allow their roots and tubers to grow. Something must be planted before they can be watered. It takes about 2-3 days for a plant to be fully grown, then it can be collected. You may also need to add up to 12 inches (30 centimeters) of soil above the surface during the growing season. Plant maincrop potatoes later, in April. How Deep to Plant Potatoes in Grow Bags, Pots or Containers. When to Plant Potatoes. Hill the potatoes every 1-2 weeks. Leave 12 inches (30 centimeters) between potato plants, with 36 inches (0.9 meters) between rows. The best way to grow potatoes is in rows or hills, but they do well in raised beds and even containers.