Description
Planting: Cold soil planting risks poor germination. Even treated corn seeds risk low germination under 60°F. Only treated seeds of good cold-germinating varieties may be sown in 55°F soil if warmer weather is anticipated. We recommend planting UNTREATED seeds when soil is warm, at least 65°F. Floating row covers may be used on early plantings to help moderate soil temperature. Each corn variety will state if it is TREATED or UNTREATED in the characteristics tab. Keep Super Sweets corn varieties a minimum of 300 feet from non-Super Sweet varieties. Sow 3/4-1″ deep, 6-7″ apart (treated) & 4-5″ (untreated), rows 30-36″ apart. Arrange in blocks of at least 4 rows for proper pollination, which is needed for well-filled ears. Successive plantings can be made through early summer; most growers prefer to extend the sweet corn season by planting a few varieties of different maturities.
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