Avg. For generations, Italians have cherished this large, paste tomato as the very best for sauce and canning, and when it comes to sauce, Italians would know! Good flavor and high solids for sauce or canning. Packet: 40 … Medium determinate plant. Planting Out San Marzano Tomatoes. Concentrated sets of paste tomatoes midseason. Wikimedia Commons. San Marzano tomato plants are indeterminate, growing 4 to feet tall in a single growing season. This is to allow adequate space to grow out and enough space to airflow between plants to help avoid diseases. This one still ranks among the richest roma types we’ve trialed and is high in sugars, pectin, and flavor for the very best in sauces, pastes, and soups. And, like any other god, they have their own creation myth: the story goes that the first San Marzano seed came to Italy in 1770 as a gift from the Viceroyalty of Perù to the Kingdom of Naples. San Marzano tomatoes are not hybrids so you can save the seed for next year. San Marzano tomatoes have become the darling of the gourmet world. Tomatoes are a rather slow-growing plant, so most gardeners will want to start these seeds indoors quite early in the spring. Italy's secret to full-flavored tomato sauces has reached beyond its borders; you can buy seeds or seedlings and grow this marvel in your own garden, wherever you are. These are determinate plants yielding pulpy tomatoes in about 12 weeks time. Tomatoes are self-pollinating so the seed will always be the same as the parent plant. Before planting dig a generous amount of compost or well-rotted manure into the soil. 78 days. Vigorous vines reach 6' or more. This articles explains step by step with pictures, how to grow san marzano tomatoes. 'San Marzano' may very well be the mother of all paste tomatoes, as it is believed by some tomato aficionados to be the parent of almost all the paste tomatoes bred in the U.S. since the 1920s. The granddaddy of the San Marzano family of sauce tomatoes. San Marzano tomatoes are a heirloom variety of tomato well known for their usage in canning and sauce making. The rosy red fruit are meaty and thick-walled, reaching up to … Ensure the soil is well-drained and never waterlogged. It can take tomato seeds six to eight weeks to become viable seedlings, then once planted outdoors, the seedlings may require as much as two months to produce ripe fruit. fruits in the true San Marzano shape. San Marzano tomatoes are, without doubt, gods of the tomato world. The San Marzano plants may not look big right now but give them a spacing of around 24″. Most of the bright red fruits are blunt tipped, so they don't crush during harvesting. Thick-walled 4–5 oz. Tomatoes need full sun so start to plan where you are going to put them. 10,900 seeds/oz.