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. 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! Vigorous vines reach 6' or more.
• Botanical Name: Solanum lycopersicum
• Days to Maturity: 70–90 days from transplanting
• Family: Solanaceae
• Native: Andes
• Hardiness: Frost-sensitive annual
• Plant Dimensions: Vines up to 6' or longer
• Variety Information: 3"–4" long, 1 ½" wide, oblong, red fruits. 'San Marzano' is a "paste" tomato.
• Type: Indeterminate, Paste, Slicer
• When to Sow Outside: For mild climates only: 1 to 2 weeks after your average last frost date, and when soil temperature is at least 60°F.
• When to Start Inside: RECOMMENDED. 4 to 6 weeks before transplanting. Transplant when air temperature is 45°F or warmer, usually 1 to 2 weeks after your average last frost date. Ideal soil temperature for germination is 70°–90°F.
• Days to Emerge: 5–10 days
• Seed Depth: ¼"
• Seed Spacing: A group of 3 seeds every 24"–36"
• Row Spacing: 36"
• Thinning: When 2" tall, thin to 1 every 24"–36"
• Harvesting: 'San Marzano' tomatoes are at the peak of sun-ripened deliciousness when red, and have a slight give when gently squeezed.