Black Prince (Heirloom) Tomato 150 Seeds By Jays Seeds Upc 643451294996 HEIRLOOM. Matures: 70 to 90 days. 150 Seeds. Plant 24  36 apart in rows 3  4 apart, in full sun. Plants grow 4  6 tall; provide a cage or trellis. This is a fairly early tomato, and one that is more apt to set fruit in cool climates. The small, dark-red, slightly pear-shaped fruits begin maturing a little more than 2 months after planting, no matter where you live. Sow tomato seeds indoors 6-8 weeks before the last frost in spring using a seed starting kit Sow seeds  inch deep in seed-starting formula Keep the soil moist at 75 degrees F Seedlings emerge in 7-14 days As soon as seedlings emerge, provide plenty of light on a sunny windowsill or grow seedlings 3-4 inches beneath fluorescent plant lights turned on 16 hours per day, off for 8 hours at night. Black Prince has been a very productive heirloom in our test garden, yielding from 25 to 40 pounds of tomatoes per plant over a 3-month harvest season. The flavor is worthy of a chefs table! Vigorous vines grow best in tall cages. Meaty, low acid variety with rich fruity flavor is wonderful for slicing, which reveals its deep red pulp.