Hurry, only 146 items left in stock!
San Marzano Determinate Tomato Seeds | Italian Heirloom Tomato for Sauce & Paste
Solanum lycopersicum
Listing is for 1 packet of 15 seeds
Grow your own delicious San Marzano tomatoes perfect for making sauce or paste. San Marzano is a classic determinate variety prized by chefs and gardeners for its rich, sweet flavor and low acidity. San Marzano tomatoes are famous for making authentic pasta sauces, salsas, and roasted tomato dishes thanks to their thick, meaty flesh and few seeds. Unlike the traditional indeterminate type, this determinate strain stays compact, making it perfect for small gardens, raised beds, and container growing. Plants reach about 3–4 feet tall and produce heavy clusters of elongated, deep red tomatoes that ripen all at once — ideal for canning or sauce-making. For best results, grow in full sun, provide consistent moisture, and support the plants with a cage or trellis. Expect an abundant harvest of gourmet-quality tomatoes in about 75–80 days from transplanting.
Tomato Characteristics
Indeterminate
Color: Red
Flavor profile: savory
Average fruit size: plum, average is 4oz
Ideal Growing Conditions
Sun: Full sun
Water: Keep soil consistenly moist but not waterlogged
Fertilizer: Regular applications of an organic granular fertilizer, like Espoma Tomato-Tone greatly increase production. Please watch my YouTube video that explains my tomato fertilizer process and schedule: https://youtu.be/PHaXNGErTJ0
When To Sow Seeds: General guidelines recommend to start seeds indoors, 6-8 weeks before your last spring frost date. Hot climate (no snow areas), can also sow seeds indoors during the summer to transplant in the fall. Sow 2 seeds per 4 inch pot or solo cups with drainage holes cut out of the bottom, filled with sterile seed starting mix, cover with 1/4 inch of soil. Place over heat mats, use grow lights, and fertilize once the first set of true leaves appear to speed up growth.
Please watch my YouTube video on how to sow tomato seeds for complete instructions: https://youtu.be/imIFbCSuvBU
Please watch my YouTube video on how to transplant tomatoes into the garden: https://youtu.be/v0Di0vXnv9Y
Germination: 7-10 days
Days To Maturity: 75 days after transplanting
How & When To Harvest: harvest as early as when the bottom of the tomatoes start to blush in color or wait for more of the tomato to turn color while on the vine
Common Diseases: Tomatoes catch a ton of common leaf diseases caused by various pathogens that die when treated with hydrogen peroxide. If you notice powdery mildew, yellow spots, or black lesions on the stems, spray with 1 cup of 3% hydrogen peroxide per gallon of water to clean and disinfect. Repeat every 3 to 5 days until you notice the spread has stopped. If a lot of rain is expected, pre-treatment will help to prevent diseases. For severe leaf diseases use a stronger treatment like Monteray Disease Control.
Common Pests: The most common pest when growing tomatoes are aphids, mealy bugs, spider mites, and worms (like the tomato horn worm or army worms). All of these can be treated with spinosad.
Do I have a YouTube video tutorial on how to grow this? YES
Checkout my tomato playlist: https://tinyurl.com/2tsw4esz
Additional Tips/Information: N/A