GreenlyRosario: frost dates
Argentina
In Rosario the last spring frost usually comes around 16 July and the first autumn frost around 15 June, which leaves about 334 frost-free days (median of 2016–2025). Tomato seedlings can go into open ground around 15 August.
| Last spring frost | around 16 July |
|---|---|
| First autumn frost | around 15 June |
| Frost-free days | 334 days |
Median of 2016–2025 for the 25 km grid cell of the city: the last day at or below 0 °C in spring and the first in autumn (ERA5 reanalysis via Open-Meteo). In a cold year a frost can come a week or two later — Greenly warns 48 hours ahead.
When to sow and plant
| Crop | Sow for seedlings | Plant out in a greenhouse | Open ground |
|---|---|---|---|
| Bell Pepper | 26 June | 8 September | 29 September |
| Chili Pepper | 10 July | 22 September | 13 October |
| Corn | — | 2 July | sow 23 July |
| Cucumber | 28 July | 8 September | 29 September |
| Eggplant | 30 June | 8 September | 29 September |
| Green Beans | 26 May | 2 July | 23 July |
| Melon | 18 July | 8 September | 29 September |
| Peas | — | 4 June | sow 25 June |
| Physalis | 10 June | 25 July | 15 August |
| Pumpkin | 18 June | 25 July | 15 August |
| Sweet Corn | — | 2 July | sow 23 July |
| Tomato | 29 May | 25 July | 15 August |
| Watermelon | 7 August | 8 September | 29 September |
| Zucchini | 23 June | 25 July | 15 August |
Planting out: a week after the last frost once the soil is warm enough for the crop; frost-hardy crops three weeks before it; an unheated greenhouse three weeks earlier. Seedlings are sown so they are ready on that day.
Rosario: weather for the next 7 days
Forecast by Open-Meteo. Nights at or below 0 °C are marked as frost.
Planted in autumn
A month before the first autumn frost, so the roots grow before winter.