San marzano tomater
Heirloom 'San Marzano': These are sometimes called 'San Marzano 2' or 'San Marzano 3.' These are the plants that make traditional oblong, thickly walled fruits with few seeds. 'San Marzano 15 F1 Hybrid': This is one hybrid that was developed in the U.S., yielding larger pear-shaped tomatoes a little earlier in the season.