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.
Sweet corn is a warm-season vegetable requiring soil temperatures between 60-90 degrees F. Avoid planting seed in cool soils. Wait until at least two weeks after the last average killing frost before planting.If planted too early, weak stands, stunted growth or frost-killed seedlings may result.weet corn is a warm-season vegetable requiring soil temperatures between 60-90 degrees F. Avoid planting seed in cool soils. Wait until at least two weeks after the last average killing frost before planting.