Freebase(0.00 / 0 votes)Rate this definition: Chemical property. A chemical property is any of a material's properties that becomes evident during a chemical reaction; that is, any quality that can be established only by changing a substance's chemical identity.
Ground Temperature. The best time to plant your corn seeds is when the soil temperature reaches an average of 50 degrees Fahrenheit. You can determine the average ground temperature in your garden using a soil thermometer -- available at most garden stores.
How to Grow Sweet Corn. Sweet corn is a annual that prefers to be planted once the temperature of the soil reaches 60 degrees Fahrenheit or higher, which comes about one month after the last threat of frost.