Climate matters. This page is a practical baseline. Confirm cultivar, local frost/heat conditions, mature size and regional restrictions before planting.
Roma Tomato — Growing reference
| Scientific name | Solanum lycopersicum |
|---|---|
| Seed germination (days) | 6–14 |
| Soil temperature for germination (°C) | 21.1–29.4 |
| First harvest or flowering (days) | 72–80 |
| Measured from | Transplant |
| Plant spacing (cm) | 45.7–61 |
| Mature height (cm) | 91.4–121.9 |
| Mature spread (cm) | 45.7–61 |
| USDA hardiness zones | 3–11 |
| Light | Full sun |
| Water | Moderate |
| Sowing method | indoor-start |
Growing directions
Sow indoors six weeks ahead of transplanting and set plants deep to build strong roots. Roma is a compact, determinate paste tomato producing firm, meaty three-inch fruits with few seeds, ideal for sauces and canning. A single stake or small cage supports the tidy vines, which set most of their fruit in a concentrated window. Water evenly and mulch to prevent blossom-end rot, and expect a heavy flush of fruit that ripens over a few weeks.
Source and local conditions
Typical planning ranges from OpenPlantDB (CC0). Cultivar, climate, season and growing method can change these values. Confirm the seed label and local guidance before planting.
Source & verification
OpenPlantDB · CC0