Customer Service Hours
Mon-Fri 8-4 MST
Features
Family
Solanaceae
Native
Andes
Life Cycle
Annual
Plant Height
Tall (Greater than 24")
Further Information
Growing Conditions
Frost Sensitive
About Tomato
Solanum lycopersicum
3"–4" long, 1 ½" wide, oblong, red fruits. 'San Marzano' is a "paste" tomato.
Planting Tomato
Plant Spacing
A group of 3 seeds every 24"–36"
Light Required
Full sun
Plant Height
Tall (Greater than 24")
Planting Depth
¼"
Coverage & Planting Details
| Coverage | This packet yields approximately 20 plants when started inside. |
|---|---|
| Row Spacing | 36" |
| Seed Depth | ¼" |
| Seed Spacing | A group of 3 seeds every 24"–36" |
| Thinning | When 2" tall, thin to 1 every 24"–36" |
| Germination | 5–10 days |
| Start Indoors | 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. |
| Direct Sow | For mild climates only: 1 to 2 weeks after your average last frost date, and when soil temperature is at least 60°F. |
| Growing & Harvesting | San Marzano' tomatoes are at the peak of sun-ripened deliciousness when red, and have a slight give when gently squeezed. |
Find Your Frost Date & Grow Zone
Average First Frost Date
October 19
Average Last Frost Date
May 19
Your Hardiness Zone is
5b
Send Your Recommendation
Total 5 star reviews: 35 Total 4 star reviews: 3 Total 3 star reviews: 4 Total 2 star reviews: 4 Total 1 star reviews: 3
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Rating
Which best describes you as a gardener?
49 reviews
- Teresa E.Verified BuyerRated 5 out of 5 stars4/24/26Tomatoes
Good germination , healthy plants
Which best describes you as a gardener? IntermediateBIBotanical Interests5/3/26Hey Teresa,
We're happy to hear your San Marzano Roma Pole Tomato Seeds had great germination and are growing into healthy plants! It sounds like you're having great success in your garden this year. Thank you for sharing your wonderful experience with these fantastic seeds! Keep on growing 🌻️
- Sara R.IL, United StatesVerified BuyerRated 5 out of 5 stars4/19/26Great germination
Germination has been very good. Can't wait to have them in the ground and producing
Which best describes you as a gardener? ExpertWho do you grow for? YourselfHow do you prefer to grow? In Ground - Margaret C.Verified BuyerRated 4 out of 5 stars4/11/26So Far
So far I've started the seeds in March, indoors, on heat, under light. They were planted out at the beginning of April and are strong and growing well. I'm pleased with the purchase.
BIBotanical Interests4/12/26Hey Margaret,
We're so excited to hear your San Marzano Roma Pole Tomato Seeds got such a great start indoors and are growing strong after transplanting! Starting them in March with heat and light was perfect timing, and it sounds like they transitioned beautifully to the garden in April. These authentic Italian beauties are going to reward you with the most amazing sauce tomatoes - that classic San Marzano flavor is absolutely incredible! You're going to love harvesting those gorgeous elongated fruits. Keep on growing 🌻️
- EnriqueRated 5 out of 5 stars3/23/265 Stars
Looking forward to trying these
- Wendy F.Verified BuyerRated 5 out of 5 stars9/9/25Beautiful tomatoes for sauce
These tomatoes are perfect for sauces and pastes. They produce a huge number of beautiful red, plump, dense fruit, climbing 4' or more. Because I had a groundhog who thought he'd test my tomatoes at night, I started picking them early and ripening them in the sun on our back porch. They were just as sweet and perfect as if I'd left them on the vine (sans groundhog). I put up several pints of sauce early in the summer, but because they just won't quit, I have rinsed and bagged the rest whole for the freezer to make sauce later. I will definitely purchase and grow these again. With a fence to keep out the groundhog. :)
Which best describes you as a gardener? IntermediateBIBotanical Interests9/9/25Hey Wendy F.,
Thank you so much for sharing your wonderful experience with our San Marzano Roma Pole Tomato Seeds! We absolutely love hearing from gardeners who discover just how perfect these tomatoes are for sauce-making - there's nothing quite like the dense, flavorful fruit they produce for preserving.
The fact that these plants just kept producing all season long so you could put up pints of sauce AND still have plenty to freeze for later - that's exactly what we love to hear!
It sounds like you really maximized your harvest despite that sneaky groundhog! Your groundhog-proof fence plan for next season sounds like a smart investment to protect all those beautiful climbing vines and their abundant harvest. Keep on growing 🌻️