San Marzano Roma Pole Tomato Seeds

Organic, Heirloom

This packet yields approximately 20 plants when started inside.
3.6923076923077 out of 5 stars
(13 reviews)
Availability: In Stock
'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.
$2.49 25 seeds

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 (Learn more)

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.

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San Marzano Roma Pole Tomato Seeds Reviews

13 reviews


2 out of 5 stars Aug 10, 2019
I am quite disappointed with this variety. The fruits are certainly bigger than a cherry tomato, but they are rather tiny for a past tomato. They also seem to be especially prone to blossom end rot. I will not be growing these again.
Kurt from MD
Owner Response: Thank you for taking the time to leave a comment. We are sorry you didn't enjoy this cultivar.

Low yield

3 out of 5 stars Sep 5, 2019
Low yield this year
Susan D Morris from CO
Owner Response: We are sorry you had a low tomato yield this year. Check out our Tomato: Sow and Grow Guide in the "learn more" tab for some helpful tips. Sometimes the weather impacts yield, but sometimes a little organic fertilizer at the right time can make all the difference.

Great Tomatoes!

5 out of 5 stars May 8, 2020
This is our third year growing these. The last two years were quite abundant -- I still have tomato sauce that I processed from last year's batch in my freezer. We have at least 9 starts from seed now, and look forward to another great year.
Kelli from CA

Great tomato

5 out of 5 stars Sep 15, 2020
This was our first year growing these as a recommendation from our son who traveled to Italy. We had 12 plants. They were meaty and we astonished at how much sauce we were able to make from them. Great flavor. Seemed to be quite healthy even in the drought conditions we had early on. A few did have blossom end rot but not enough to be a problem. We are looking forward to planting them next summer.
Laurie Bean from PA

Best and Worst

3 out of 5 stars Sep 17, 2020
These roma tomatoes are prolific, large and meaty and beautiful! I started the seeds inside, but out of the whole packet, only one plant grew. Germination on all other seed varieties was outstanding. I'd decided not to purchase these romas again after the poor germination, but the amount of production and the quality of the tomatoes on the one tomato plant is amazing. I will order these again!
Linda Lind from MN
Owner Response: Hi Linda, Thank you for making us aware of the germination issue you had. This is unusual. We want you to know quality is important to us an dour seeds are frequently tested to ensure germiantion rates exceed federal and our own standards. A customer service agent will be contacting you to help.

Great maters!

5 out of 5 stars Sep 18, 2020
Mine were going great guns until the bed got infested with the wilt. Big luscious fruit.
Mike from AZ

Not successful

2 out of 5 stars Sep 27, 2021
I couldn't get these to germinate. I will keep trying until I succeed.
Toni from CO
Owner Response: Hi Toni, We are sorry you had difficulty germinating these seeds. We are always happy to help troubleshoot issues. A customer service agent will be emailing you to help.

trouble with germination

1 out of 5 stars Oct 4, 2021
Like another reviewer I had problems with germination. While all the other seeds (tomatoes and others) that I started indoors (heat mat and grow light) did very well - not one of these seeds germinated. I ended up having to purchase Roma plants. (Loved the Glacier tomatoes though)
Elaine from ID
Owner Response: Hi Elaine, Thank you for the feedback. We are sorry these seeds didn't germinate well for you. A customer service agent will be contacting you by email to help.


3 out of 5 stars Oct 10, 2021
This plant grew well, produced prolificly, tomatoes were very tasty. The down side is that this variety showed high susceptibility to blossom end rot while other varieties near by did not. Used this tomato to make sauce.
Joshua from MO
Owner Response: Hi Joshua, Thanks for sharing your feedback. Blossom end rot most often from inconsistent watering and you are correct that some plants are more sensitive than others. A drip system or moisture meter can be quite helpful to keep tomatoes consistently moist. Happy gardening!


4 out of 5 stars Apr 30, 2022
Satified with germination rate
Bobby from MO

High Productivity Indeterminant Paste Tomato

5 out of 5 stars Sep 5, 2022
This San Marzano is a complete success in my garden this year (last year, my single test plant of this variety was killed by cutworms). The one plant I'm trying this year has grown steadily, and is on track to produce well in excess of 10 pounds of fruit, more likely 20 pounds if I were actually weighing it rather than just estimating. Fruit have zero blossom end rot (although I have reduced my inorganic fertilizer significantly from previous years) and not much loss black spots in general (although it has been a very, very dry summer) (and I use a drip irrigation system to keep the leaves from getting wet). These are *not* an eating (salad) tomato, but a minimally seeded, dry paste tomato that improves on cooking with little boiling required to get a thick sauce. Quite seriously, the biggest issue that I've been having is that the fruit load is so extreme that the twine that I'm using to suspend the vines (I use an overhead wire system) has started breaking and dropping entire sections of the plant onto the ground. Some fruit is not ripening completely on the vines (probably too much foliage), but ripens well on a bench in a warm garage in a few days. Hope that this variety will be offered again over many years and not discontinued as so many others have been.
Carl from MA

Did Well

5 out of 5 stars Nov 21, 2022
I germinated my San Marzano's, Supremo's and Italian seeds and every seed but one grew. I kept them warm and under a grow light. The San Marzano's did well but the Italian gave an enormous amount of fruit. I've grown San Marzano seeds from Botanical Interest for a few years and have had a great rate of germination. Last year I seeded 190 tomato plants (from these three) and 189 came up. What was I thinking!!
Barbara from GA

One of the best!

5 out of 5 stars Nov 26, 2022
I have grown these for the past 4 years and always have an abundant crop for sauce and herb-seasoned canned tomatoes...delicious! This variety is one of the best! As I read other reviews I'd like to point out that tomatoes need proper food and water or you will have a bad crop. I grow several other varieties (about 25 plants total) and always have beautiful tomato plants. I use a local organic tomato food that is high in calcium and low nitrogen and use at transplanting time and as a side dress twice before the tomatoes begin to ripen. With proper care this variety won't disappoint.
Amy from ID
Owner Response: Hi Amy, Thanks so much for the great review and the tips for getting a great crop! We're so glad you enjoy this seed.

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