GreenlyBarcelona: frost dates
Spain
| Last spring frost | around 24 January |
|---|---|
| First autumn frost | around 12 December |
| Frost-free days | 322 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 | 18 February | 3 May | 24 May |
| Chili Pepper | 26 February | 11 May | 1 June |
| Corn | — | 2 March | sow 23 March |
| Cucumber | 22 March | 3 May | 24 May |
| Eggplant | 22 February | 3 May | 24 May |
| Green Beans | 24 January | 2 March | 23 March |
| Melon | 12 March | 3 May | 24 May |
| Peas | — | 13 December | sow 3 January |
| Physalis | 18 February | 4 April | 25 April |
| Pumpkin | 26 February | 4 April | 25 April |
| Sweet Corn | — | 2 March | sow 23 March |
| Tomato | 6 February | 4 April | 25 April |
| Watermelon | 1 April | 3 May | 24 May |
| Zucchini | 3 March | 4 April | 25 April |
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.
Planted in autumn
| Crop | Plant around |
|---|---|
| Crocus | 12 November |
| Daffodil | 12 November |
| Garlic | 12 November |
| Hyacinth | 12 November |
| Lily | 12 November |
| Tulip | 12 November |
A month before the first autumn frost, so the roots grow before winter.