Tomato Seeds TanushriOverview Tomato is a warm season crop and requires a relatively long growing season with plenty of sunshine and moderate day temperature of 2028C. It is sensitive to frost. Under low temperature, the plant growth is restricted and fruit setting is low. The critical factor in the setting of fruits is the night temperature, the optimum range being 1520C. The red pigment in the fruit will develop only when the temperature is between 15C 30C. Above this