Corn is a favorite crop of South Carolina gardeners. It's a warm-season vegetable that grows best when temperatures are between 60 and 80 degrees Fahrenheit. Wait for a warm, dry day to plant your seeds in the Palmetto State.
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The ideal time to plant corn in South Carolina depends on your part of the state. If you live in the Piedmont--for instance, Abbeville, Greenville or York--Clemson Extension recommends planting your corn April 15 to 30. If you're in the central section--near Aiken, Florence or Sumter--plant from March 20 to April 30. The warm coastal section--around Charleston, Beaufort and Georgetown--can plant corn from March 10 to April 30.
Corn germinates best when the soil temperature is between 60 and 95 degrees Fahrenheit. Cold soil will keep your seeds from sprouting. Clemson Extension recommends a soil temperature at four inches of at least 50 degrees Fahrenheit, with extra-sweet varieties not being planted until the soil reaches 65 degrees Fahrenheit.
Do not plant your corn in wet soil. Wait for a weather forecast that shows three or four warm, dry days ahead. These conditions will help you avoid seed rot.