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.
millet is sensitive to cold and should only be planted when soil temperatures at a 1 inch 2 5 cm depth are consistently at 65Âºf 18Âºc or above to ensure reliable sprouting this is typically three or four weeks after corn planting time and one to two weeks after sorghum planting time in your area