San Marzano
Heirloom tomato
- Breeding
- Heirloom
- Growth habit
- Indeterminate
- Days to maturity
- 78-85 days 3 sources, none independent · basis unstated
- Fruit
- red, plum
- Weight
- -
- Bred by
- -
Grey captions say what stands behind that particular figure. Breeding, growth habit and fruit characters carry no caption because they rest on the record's sources as a whole rather than citing their own; closing that gap is ordinary outstanding work, not a finished job.
Commonly confused with
These are different varieties. A name shared between them does not make them the same seed.
- different variety
San Marzano Redorta
Redorta is a larger Italian selection named for a Bergamo peak, not the DOP San Marzano.
Origin & history
The Italian paste standard from the volcanic plain below Vesuvius, where the true DOP-protected canning tomato is still grown. Long, blocky, low-seed fruit that defined what sauce tomatoes should be.
Measurements
| Measurement | Value | Context |
|---|---|---|
| Days to maturity | 78-85 days | Consensus range across the cited sources, which include both independent references and commercial catalogs. |
Against the rest of the tomato database
Where this variety sits among every tomato we hold a comparable figure for. Position is not merit: earlier is not better than later, and hotter is not better than milder. Only cultivar-level figures are compared, never trial results, and maturity is only ranked against figures counted the same way.
later than 76% of the 258 tomatoes we hold a figure for. None of these figures state whether they are counted from sowing or from transplant, so they are ranked against each other on the assumption that suppliers use one convention, which is not something any of them says.
Traits
Disease resistance
No documented disease resistance, typical of heirlooms and older open-pollinated varieties. See tomato diseases for the cultural playbook that fills the gap.
Related varieties
- heirloom
Grandma Mary's Paste
70-80 days · Indeterminate
- heirloom
Amish Paste
80-85 days · Indeterminate
- heirloom
Black Plum
75-82 days · Indeterminate
- heirloom
Costoluto Fiorentino
75-85 days · Indeterminate
- heirloom
Costoluto Genovese
78-85 days · Indeterminate
- heirloom
Federle
80-85 days · Indeterminate
Head to head
Explore all tomato varieties · compare any two · when to plant it where you are
Sources & References
Evidence: 3 sources, 2 seed catalogs and 1 community collection. No independent reference documents this yet.
- Baker Creek Heirloom Seeds catalog · Baker Creek Heirloom Seed Co., Seed Catalog
- Tomato Growers Supply catalog · Tomato Growers Supply Company, Seed Catalog
- Vegetable Varieties for Gardeners · Cornell University Cooperative Extension, Community Collection