The greatest sauce tomato in the world! Vigorous vines offer protection for clusters of deep red plum tomatoes that make some of the best sauce in the world. This highly sought variety has a very high concentration of solids, making it idea for sauce, paste, and canning. San Marzano comes from the Campania region of southern Italy. This late season plum tomato has low acid and low sugar making it ideal for a cooking tomato.