GreenlyEdmonton: frost dates
Canada
In Edmonton the last spring frost usually comes around 7 May and the first autumn frost around 6 October, which leaves about 152 frost-free days (median of 2016–2025). Tomato seedlings can go into open ground around 3 June.
| Last spring frost | around 7 May |
|---|---|
| First autumn frost | around 6 October |
| Frost-free days | 152 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 | 24 March | 6 June | 27 June |
| Chili Pepper | 8 April | 21 June | 12 July |
| Corn | — | 26 April | sow 17 May |
| Cucumber | 25 April | 6 June | 27 June |
| Eggplant | 28 March | 6 June | 27 June |
| Green Beans | 20 March | 26 April | 17 May |
| Melon | 15 April | 6 June | 27 June |
| Peas | — | 26 March | sow 16 April |
| Physalis | 29 March | 13 May | 3 June |
| Pumpkin | 6 April | 13 May | 3 June |
| Sweet Corn | — | 26 April | sow 17 May |
| Tomato | 17 March | 13 May | 3 June |
| Watermelon | 5 May | 6 June | 27 June |
| 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.
Edmonton: 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 | 6 September |
| Daffodil | 6 September |
| Garlic | 6 September |
| Hyacinth | 6 September |
| Lily | 6 September |
| Tulip | 6 September |
A month before the first autumn frost, so the roots grow before winter.