Seed potatoes with growers are quite valuable. They will give you a head start on the growing season, as they've already begun to put out the vine. Plant these seed potatoes the same way you plant those that do not have growers, while being careful not to break off the sprout. Wait until all danger of frost has passed and the soil has warmed to at least 55 degrees Fahrenheit.
Prepare the planting area by tilling the soil. This can be done with a gardening fork or shovel. Dig into the soil to a depth of 12 inches, and turn the soil, crushing any large clods. The idea is to make the soil fluffy.
Dig a trench, 11 inches deep.
Lay a 3-inch layer of compost at the bottom of the trench.
Plant the seed potatoes 10 to 14 inches apart, with the sprout at the top.
Cover the seed with 4 inches of soil. It is fine if the new sprout is covered.
Add another 4 inches of soil in a hill around the new sprout, when it reaches 8 inches in height.
Repeat the procedure in three weeks: hilling another 2 inches of soil over the developing vine. This must be done one more time, in two weeks, again adding 2 inches of soil.
Cover the potato if at any time it becomes exposed. Sunlight will make it turn green.