GreenlyMendoza: frost dates
Argentina
In Mendoza the last spring frost usually comes around 10 August and the first autumn frost around 17 June, which leaves about 311 frost-free days (median of 2016–2025). Tomato seedlings can go into open ground around 9 September.
| Last spring frost | around 10 August |
|---|---|
| First autumn frost | around 17 June |
| Frost-free days | 311 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 | 17 June | 27 July | 17 August |
| Arugula | — | 29 June | sow 20 July |
| Basil | 22 July | 29 August | 19 September |
| Beet | — | 29 June | sow 20 July |
| Bell Pepper | 16 June | 29 August | 19 September |
| Black-eyed Susan | 16 June | — | 17 August |
| Bok Choy | 22 June | 27 July | 17 August |
| Broad bean | — | 29 June | sow 20 July |
| Broccoli | — | 29 June | sow 20 July |
| Brussels Sprouts | 15 May | 29 June | 20 July |
| Cabbage | — | 29 June | sow 20 July |
| Calendula | — | 29 June | sow 20 July |
| Carrot | — | — | sow 20 July |
| Cauliflower | 18 May | 29 June | 20 July |
| Celeriac | 11 May | 27 July | 17 August |
| Celery | 11 May | 27 July | 17 August |
| Celosia | 10 July | 24 August | 14 September |
| Chamomile | — | 29 June | sow 20 July |
| Chayote | 30 April | 27 July | 17 August |
| Chickpea | — | — | sow 20 July |
| Chili Pepper | 23 June | 5 September | 26 September |
| China aster | 8 July | 29 August | 19 September |
| Chives | — | — | sow 20 July |
| Cilantro | — | 29 June | sow 20 July |
| Corn | — | 27 July | sow 17 August |
| Cosmos | 10 July | 24 August | 14 September |
| Cucumber | 18 July | 29 August | 19 September |
| Daikon | — | 29 June | sow 20 July |
| Delphinium | 22 May | — | 20 July |
| Dill | — | 29 June | sow 20 July |
| Eggplant | 20 June | 29 August | 19 September |
| Florence fennel | 12 June | 27 July | 17 August |
| Garden sorrel | — | 29 June | sow 20 July |
| Green Beans | 20 June | 27 July | 17 August |
| Hyssop | — | — | sow 20 July |
| Kale | — | 29 June | sow 20 July |
| Kiwano | 18 July | 19 August | 9 September |
| Kohlrabi | — | 29 June | sow 20 July |
| Leek | 20 April | 29 June | 20 July |
| Lemon balm | — | 29 June | sow 20 July |
| Lettuce | — | 29 June | sow 20 July |
| Lisianthus | 3 April | 29 June | 20 July |
| Lovage | — | — | sow 20 July |
| Luffa | 18 July | 29 August | 19 September |
| Marigold | 15 June | 27 July | 17 August |
| Melon | 8 July | 29 August | 19 September |
| Microgreens | — | 24 August | sow 14 September |
| Moringa | 12 July | 5 September | 26 September |
| Mustard greens | — | 29 June | sow 20 July |
| Napa cabbage | 24 June | 27 July | 17 August |
| Nasturtium | 19 June | 27 July | 17 August |
| Okra | 18 July | 29 August | 19 September |
| Oregano | 30 April | 29 June | 20 July |
| Pansy | 4 May | 29 June | 20 July |
| Parsley | — | 29 June | sow 20 July |
| Parsnip | — | — | sow 20 July |
| Peanut | 23 July | 29 August | 19 September |
| Peas | — | 29 June | sow 20 July |
| Petunia | 27 June | 29 August | 19 September |
| Physalis | 5 July | 19 August | 9 September |
| Pumpkin | 13 July | 19 August | 9 September |
| Purple coneflower | 19 May | — | 20 July |
| Radish | — | — | sow 20 July |
| Sage | 11 May | 29 June | 20 July |
| Snapdragon | 25 April | 29 June | 20 July |
| Spinach | — | 29 June | sow 20 July |
| Stevia | 1 July | 19 August | 9 September |
| Stock | — | 29 June | sow 20 July |
| Sunflower | — | 24 August | sow 14 September |
| Sweet Corn | — | 27 July | sow 17 August |
| Sweet pea | 18 May | 29 June | 20 July |
| Sweet William | — | — | sow 20 July |
| Swiss Chard | — | 29 June | sow 20 July |
| Thyme | — | 29 June | sow 20 July |
| Tomato | 23 June | 19 August | 9 September |
| Turnip | — | 29 June | sow 20 July |
| Watercress | — | 29 June | sow 20 July |
| Watermelon | 28 July | 29 August | 19 September |
| Zinnia | 1 August | 5 September | 26 September |
| Zucchini | 18 July | 19 August | 9 September |
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.
Mendoza: weather for the next 7 days
Forecast by Open-Meteo. Nights at or below 0 °C are marked as frost.
Weather in Mendoza by month
Average weather in Mendoza over 2016–2025: the warmest month is January, the wettest January.
| Month | Day, °C | Night, °C | Rain, mm | Rainy days |
|---|---|---|---|---|
| January | 31.3 | 20.4 | 53 | 7 |
| February | 29.9 | 19.4 | 31 | 6 |
| March | 26.6 | 16.3 | 31 | 5 |
| April | 21.5 | 12 | 23 | 4 |
| May | 16.2 | 7.8 | 23 | 5 |
| June | 12.8 | 3.9 | 10 | 2 |
| July | 12.8 | 3.1 | 6 | 2 |
| August | 17 | 5.5 | 16 | 2 |
| September | 21 | 8.7 | 6 | 2 |
| October | 24.6 | 11.9 | 23 | 4 |
| November | 28.5 | 16.3 | 17 | 4 |
| December | 31.1 | 18.9 | 22 | 4 |
Average of the daily highs and lows, rain per month and days with at least 1 mm (ERA5 via Open-Meteo, the same grid cell as the frost dates).
Planted in autumn
| Crop | Plant around |
|---|---|
| Bearded Iris | 18 May |
| Crocus | 18 May |
| Daffodil | 18 May |
| Garlic | 18 May |
| Hyacinth | 18 May |
| Lily | 18 May |
| Peony | 18 May |
| Saffron | 18 May |
| Tulip | 18 May |
| Wild garlic | 18 May |
A month before the first autumn frost, so the roots grow before winter.