GreenlyIrkutsk: frost dates
Russia
In Irkutsk the last spring frost usually comes around 14 May and the first autumn frost around 30 September, which leaves about 139 frost-free days (median of 2016–2025). Tomato seedlings can go into open ground around 26 May.
| Last spring frost | around 14 May |
|---|---|
| First autumn frost | around 30 September |
| Frost-free days | 139 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 | 12 March | 25 May | 15 June |
| Chili Pepper | 21 March | 3 June | 24 June |
| Corn | — | 30 April | sow 21 May |
| Cucumber | 13 April | 25 May | 15 June |
| Eggplant | 16 March | 25 May | 15 June |
| Green Beans | 24 March | 30 April | 21 May |
| Melon | 3 April | 25 May | 15 June |
| Peas | — | 2 April | sow 23 April |
| Physalis | 21 March | 5 May | 26 May |
| Pumpkin | 29 March | 5 May | 26 May |
| Sweet Corn | — | 30 April | sow 21 May |
| Tomato | 9 March | 5 May | 26 May |
| Watermelon | 23 April | 25 May | 15 June |
| Zucchini | 3 April | 5 May | 26 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.
Irkutsk: 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 | 31 August |
| Daffodil | 31 August |
| Garlic | 31 August |
| Hyacinth | 31 August |
| Lily | 31 August |
| Tulip | 31 August |
A month before the first autumn frost, so the roots grow before winter.