Let cut pieces dry for several days before planting. When plants are 5 to 6 inches high, scrape soil from between the rows and hill up the plants, covering the stems with soil. Apply fertilizer in bands at both sides of seed pieces at time of planting. Potatoes need a steady supply of water. Under watering will cause hollow tubers.
New potatoes are ready for harvest as soon as the plant flowers.
For full size potatoes, wait to harvest them when the tops yellow or die back. Requires high fertility. Red skinned, round to oval. Good for boiling and mashing. Stores well but can be over fertilized.