GreenlyGlasgow: frost dates
United Kingdom
In Glasgow the last spring frost usually comes around 28 April and the first autumn frost around 11 November, which leaves about 197 frost-free days (median of 2016–2025). Tomato seedlings can go into open ground around 3 June.
| Last spring frost | around 28 April |
|---|---|
| First autumn frost | around 11 November |
| Frost-free days | 197 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 |
|---|---|---|---|
| Achocha | 5 March | 14 April | 5 May |
| Arugula | — | 17 March | sow 7 April |
| Basil | 23 May | 30 June | 21 July |
| Beet | — | 17 March | sow 7 April |
| Bell Pepper | 17 April | 30 June | 21 July |
| Black-eyed Susan | 4 March | — | 5 May |
| Bok Choy | 10 March | 14 April | 5 May |
| Broad bean | — | 17 March | sow 7 April |
| Broccoli | — | 17 March | sow 7 April |
| Brussels Sprouts | 31 January | 17 March | 7 April |
| Cabbage | — | 17 March | sow 7 April |
| Calendula | — | 17 March | sow 7 April |
| Carrot | — | — | sow 7 April |
| Cauliflower | 3 February | 17 March | 7 April |
| Celeriac | 27 January | 14 April | 5 May |
| Celery | 27 January | 14 April | 5 May |
| Celosia | 12 April | 27 May | 17 June |
| Chamomile | — | 17 March | sow 7 April |
| Chayote | 27 January | 25 April | 16 May |
| Chickpea | — | — | sow 7 April |
| Chili Pepper | 30 January | 14 April | 5 May |
| China aster | 9 May | 30 June | 21 July |
| Chives | — | — | sow 7 April |
| Cilantro | — | 17 March | sow 7 April |
| Corn | — | 25 April | sow 16 May |
| Cosmos | 12 April | 27 May | 17 June |
| Cucumber | 19 May | 30 June | 21 July |
| Daikon | — | 17 March | sow 7 April |
| Delphinium | 7 February | — | 7 April |
| Dill | — | 17 March | sow 7 April |
| Eggplant | 21 April | 30 June | 21 July |
| Florence fennel | 28 February | 14 April | 5 May |
| Garden sorrel | — | 17 March | sow 7 April |
| Green Beans | 19 March | 25 April | 16 May |
| Hyssop | — | — | sow 7 April |
| Kale | — | 17 March | sow 7 April |
| Kiwano | 11 April | 13 May | 3 June |
| Kohlrabi | — | 17 March | sow 7 April |
| Leek | 6 January | 17 March | 7 April |
| Lemon balm | — | 17 March | sow 7 April |
| Lettuce | — | 17 March | sow 7 April |
| Lisianthus | 20 December | 17 March | 7 April |
| Lovage | — | — | sow 7 April |
| Luffa | 19 May | 30 June | 21 July |
| Marigold | 3 March | 14 April | 5 May |
| Melon | 9 May | 30 June | 21 July |
| Microgreens | — | 27 May | sow 17 June |
| Moringa | 18 February | 14 April | 5 May |
| Mustard greens | — | 17 March | sow 7 April |
| Napa cabbage | 12 March | 14 April | 5 May |
| Nasturtium | 7 March | 14 April | 5 May |
| Okra | 19 May | 30 June | 21 July |
| Oregano | 16 January | 17 March | 7 April |
| Pansy | 20 January | 17 March | 7 April |
| Parsley | — | 17 March | sow 7 April |
| Parsnip | — | — | sow 7 April |
| Peanut | 24 May | 30 June | 21 July |
| Peas | — | 17 March | sow 7 April |
| Petunia | 28 April | 30 June | 21 July |
| Physalis | 29 March | 13 May | 3 June |
| Pumpkin | 6 April | 13 May | 3 June |
| Purple coneflower | 4 February | — | 7 April |
| Radish | — | — | sow 7 April |
| Sage | 27 January | 17 March | 7 April |
| Snapdragon | 11 January | 17 March | 7 April |
| Spinach | — | 17 March | sow 7 April |
| Stevia | 25 March | 13 May | 3 June |
| Stock | — | 17 March | sow 7 April |
| Sunflower | — | 27 May | sow 17 June |
| Sweet Corn | — | 25 April | sow 16 May |
| Sweet pea | 3 February | 17 March | 7 April |
| Sweet William | — | — | sow 7 April |
| Swiss Chard | — | 17 March | sow 7 April |
| Thyme | — | 17 March | sow 7 April |
| Tomato | 17 March | 13 May | 3 June |
| Turnip | — | 17 March | sow 7 April |
| Watercress | — | 17 March | sow 7 April |
| Watermelon | 29 May | 30 June | 21 July |
| Zinnia | 10 March | 14 April | 5 May |
| Zucchini | 11 April | 13 May | 3 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.
Glasgow: 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 |
|---|---|
| Bearded Iris | 12 October |
| Crocus | 12 October |
| Daffodil | 12 October |
| Garlic | 12 October |
| Hyacinth | 12 October |
| Lily | 12 October |
| Peony | 12 October |
| Saffron | 12 October |
| Tulip | 12 October |
| Wild garlic | 12 October |
A month before the first autumn frost, so the roots grow before winter.