1, the best time for sweet corn planting is from March to May.

2, the growth of sweet corn on the soil temperature requirements, the temperature should be above 12 degrees, so that the seeds will take root. Planting time should be a period of time later than ordinary corn, if the planting is too early, it is easy to appear the danger of rotten seeds. The exact time is between March and May. It must not be planted too early or too late. Too early the temperature is low, easy to frostbite seedlings. Too late is also not good, the temperature is high, the seedlings are easy to sunburn.