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How to Plant Open-Pollinated Corn

Open-pollinated corn, which is commonly referred to as "heirloom" corn, consists of strains that occurred naturally through cross-pollination or random genetic mutation. As an example, the sweet corn that people enjoy eating is believed to have developed from a genetic mutation of field corn. Open-pollinated corn varieties include field corn (dent), sweet corn and popcorn. If you would like to grow a patch of open-pollinated sweet corn or popcorn in your home garden, it will not require any unusual propagation techniques or agricultural practices.

Things You'll Need

  • Garden spade or tiller
  • Bow rake
  • Fertilizer blend, such as 12-12-12
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Instructions

    • 1

      Select a location receiving maximum full-sun exposure with well-drained soil.

    • 2

      Spade or till the soil to a depth of at least 6 inches, breaking up all clods and removing any rocks you may find. Loose soil helps corn plants establish strong root systems.

    • 3

      Add 3 to 4 pounds of balanced fertilizer, such as 12-12-12, to the soil for every 100 square feet of garden you intend to plant. Till or blend the fertilizer into the soil.

    • 4

      Wait until all danger of frost has passed. If local commercial growers begin planting corn, it's safe to plant yours.

    • 5

      Rake the bed level and create a series of furrows 1-inch deep and 2 1/2 to 3 feet apart.

    • 6

      Sow your individual seeds 8 to 10 inches apart. As corn is wind-pollinated, proper spacing ensures good air circulation.

    • 7

      Cover the seeds with soil and gently firm it down.

    • 8

      Water the garden to moisten the soil, hold down any dust and help the seeds begin germinating. Water the soil whenever it appears to be drying out, but do not saturate the ground.

    • 9

      Monitor the garden on a daily basis. Based upon the open-pollinated variety you have selected, your seeds will begin emerging in 10 to 14 days.