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Lawn and gardening information for Colquitt County from the Extension office..

Home potato production can be fun and rewarding.  They are easy to grow and you can share them with all your neighbors. To have a successful crop the homeowner must provide good soil, ample water, and proper fertilization. Let’s discuss some important keys to successful potato production.

How do I prepare the seed potatoes? Potatoes should be cut so that each seed piece has at least two eyes; each piece should weigh at least 1.5 ounces (about the size of a small egg). Make cuts to expose the least amount of surface area. During cutting, discard any potatoes that show dark rings or discoloration inside. Gardeners should plant their seed pieces immediately after being cut. If weather delays planting, the seed that was cut may be stored for a few days at 55° to 60°F. To promote surface healing of the seed pieces, high humidity (85 percent) is recommended. Gardeners can get a jump on production by per-sprouting their potatoes. To sprout seed potatoes before planting, place them for two to three weeks in a single layer on an enclosed porch or in a warm room where they will get some sun and where the temperature will stay at 600 °F or warmer.

What varieties do I need to plant? The variety you choose depends on your taste. Some of the white Irish potato varieties include Kennebec and Irish Cobbler. Early red varieties are Red Pontiac and Red LaSoda. The thick, russet-skinned potatoes sold in the grocery store do not grow well in the South and should be avoided.

When should I plant potatoes? Gardeners can plant early potatoes when the soil temperature reaches 45 °F, usually, before the danger of the last spring frost has passed. The Georgia Weather Network is a great place to monitor soil temperatures and frost dates. Potatoes germinate and emerge best when soil temperatures are above 50 °F.

How deep and how far apart do I plant my potatoes? Plant seed potatoes 4 to 5 inches deep with the eyes facing up. Gardeners can space their rows 24 to 36 inches wide and plant potatoes 7 to 8 inches apart in the row. Although potatoes can be planted on flat ground, forming a hill around the plant is preferable. Hills provide room for developing tubers to expand and prevent greening from the sun. Potato hills can be formed at planting time by mounding dirt around the seed piece, or they can be formed after the plants are up. Hill within four weeks of planting.

How do I fertilize my potatoes? The best soil acidity range for potatoes is between 4.8 and 5.4 pH. On soils with a pH of 5.5 to 7.0, the potatoes can be infected with a disease called scab. Lime should not be used unless a soil test indicates a pH level below 4.8. Gardeners should broadcast 10-10-10 at a rate of 1.5 pounds per 100 square feet when forming hills before planting; then side dress about 6 weeks after planting, when tubers begin to form, with another application of 10-10-10 at the same rate. Additional fertilizer can be added up to three weeks before harvest.

If you have questions about home potato production call the Colquitt County Extension office at 229-616-7455.

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