GreenlyCork: frost dates
Ireland
In Cork the last spring frost usually comes around 3 April and the first autumn frost around 21 November, which leaves about 232 frost-free days (median of 2016–2025). Tomato seedlings can go into open ground around 10 June.
| Last spring frost | around 3 April |
|---|---|
| First autumn frost | around 21 November |
| Frost-free days | 232 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 | 11 April | 24 June | 15 July |
| Chili Pepper | 9 April | 22 June | 13 July |
| Corn | — | 27 April | sow 18 May |
| Cucumber | 13 May | 24 June | 15 July |
| Eggplant | 15 April | 24 June | 15 July |
| Green Beans | 21 March | 27 April | 18 May |
| Melon | 3 May | 24 June | 15 July |
| Peas | — | 20 February | sow 13 March |
| Physalis | 5 April | 20 May | 10 June |
| Pumpkin | 13 April | 20 May | 10 June |
| Sweet Corn | — | 27 April | sow 18 May |
| Tomato | 24 March | 20 May | 10 June |
| Watermelon | 23 May | 24 June | 15 July |
| Zucchini | 18 April | 20 May | 10 June |
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.
Cork: weather for the next 7 days
Forecast by Open-Meteo. Nights at or below 0 °C are marked as frost.
Planted in autumn
| Crop | Plant around |
|---|---|
| Crocus | 22 October |
| Daffodil | 22 October |
| Garlic | 22 October |
| Hyacinth | 22 October |
| Lily | 22 October |
| Tulip | 22 October |
A month before the first autumn frost, so the roots grow before winter.