Sow in flats 6 to 8 weeks prior to transplanting outdoors. Tomato seed will not germinate in cool soil. Be sure soil temperature is at least 75 degrees F. Plant seed 1/4 inch deep. When plants are 1-1/2 inches high, transplant into Jiffy pots. Transplant outdoors 3 to 4 feet apart only when night time temperature stays above 45 degrees F. Maturity dates are from date of outdoor transplanting. Tomato seed varies in size with an average of 9000 seeds per ounce.