GreenlyManchester: frost dates
United Kingdom
| Last spring frost | around 22 April |
|---|---|
| First autumn frost | around 14 November |
| Frost-free days | 206 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 | 25 March | 7 June | 28 June |
| Chili Pepper | 3 April | 16 June | 7 July |
| Corn | — | 17 April | sow 8 May |
| Cucumber | 26 April | 7 June | 28 June |
| Eggplant | 29 March | 7 June | 28 June |
| Green Beans | 11 March | 17 April | 8 May |
| Melon | 16 April | 7 June | 28 June |
| Peas | — | 11 March | sow 1 April |
| Physalis | 22 March | 6 May | 27 May |
| Pumpkin | 30 March | 6 May | 27 May |
| Sweet Corn | — | 17 April | sow 8 May |
| Tomato | 10 March | 6 May | 27 May |
| Watermelon | 6 May | 7 June | 28 June |
| Zucchini | 4 April | 6 May | 27 May |
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 | 15 October |
| Daffodil | 15 October |
| Garlic | 15 October |
| Hyacinth | 15 October |
| Lily | 15 October |
| Tulip | 15 October |
A month before the first autumn frost, so the roots grow before winter.