Planting Potatoes - Knowledgebase Question

Avatar for HARRYL9
Question by HARRYL9
April 18, 1998
How early can I plant potatoes? How far apart should I plant them? Do they have to be hilled?

Answer from NGA
April 18, 1998
Potatoes prefer an acid soil with a pH of around 5.5 to 6. Mix some compost into the soil before planting and go easy on the manure, which can encourage potato scab. Since too much nitrogen will promote foliage growth at the expense of tuber growth, stick to fertilizers such as phosphate rock and greensand to provide nutrients.

Plant seed potatoes about 12" apart in rows 2 1/2' apart. (If your seed potatoes are large--say, larger than an egg, you can cut them into pieces before planting. Just be sure each piece has 2 or 3 eyes. Allow the cut potatoes to dry overnight before planting.) I like to plant in trenches about 6" deep, covering the seed potatoes with about 2" of soil.

Hilling potatoes encourages production of more tubers. When the plants reach about 6" tall, mound soil or mulch around the base of the plants within 1/2" of the lower leaves. (You'll be filling in the trench, if you made one.) Repeat this process several times throughout the summer.

I usually plant my potatoes about 2 weeks before the last frost date--in your region, that's sometime around mid-April. (Don't worry about planting them late--you can still plant them even after the last frost date.)

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