Greenly

Buenos Aires: frost dates

Argentina

Last spring frostaround 14 July
First autumn frostnone in ten years

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

CropSow for seedlingsPlant out in a greenhouseOpen ground
Bell Pepper4 July16 September7 October
Chili Pepper16 July28 September19 October
Corn—30 Junesow 21 July
Cucumber5 August16 September7 October
Eggplant8 July16 September7 October
Green Beans24 May30 June21 July
Melon26 July16 September7 October
Peas—2 Junesow 23 June
Physalis28 June12 August2 September
Pumpkin6 July12 August2 September
Sweet Corn—30 Junesow 21 July
Tomato16 June12 August2 September
Watermelon15 August16 September7 October
Zucchini11 July12 August2 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.

Planted in autumn

CropPlant around
Crocus1 April
Daffodil1 April
Garlic1 April
Hyacinth1 April
Lily1 April
Tulip1 April

A month before the first autumn frost, so the roots grow before winter.

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