Greenly Garden

Last and first frost dates in General Roca

Argentina

In General Roca the last spring frost usually comes around 25 August and the first autumn frost around 1 June, which leaves about 280 frost-free days (median of 2016–2025). Tomato seedlings can go into open ground from 26 September to 9 February.

Last spring frostaround 25 August
First autumn frostaround 1 June
Frost-free days280 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 is the last frost in General Roca?

The last frost in General Roca usually comes around 25 August: that is the median of 2016–2025, so in about half of those years the last night at or below 0 °C came later. Hardy crops start before it and frost-tender ones only after it: in the table below arugula can go into open ground from 4 August, while corn waits until 10 September. The first autumn frost follows around 1 June, about 280 days later: harvest or cover frost-tender crops before then.

When to sow and plant

CropSow for seedlingsPlant out in a greenhouseOpen ground
Achocha2 July – 21 February11 August – 1 April1 September – 1 April
Ageratumfrom 11 July—from 26 September
Arugula——sow 4 August – 26 April
Basil20 August – 29 March27 September – 6 May18 October – 6 May
Beet——sow 4 August – 1 April
Bell Pepper29 July – 11 December27 September – 9 February18 October – 9 February
Black-eyed Susanfrom 10 June—from 1 September
Bok Choy7 July – 9 April11 August – 14 May1 September – 14 May
Borage——sow 1 September – 6 April
Broad bean——sow 4 August – 21 February
Broccoli——sow 4 August – 14 February
Brussels Sprouts30 May – 12 January14 July – 26 February4 August – 26 February
Busy Lizziefrom 9 June—from 1 September
Cabbage——sow 4 August – 22 January
Calendula——sow from 4 August
Carrot——sow 4 August – 8 March
Cauliflower2 June – 14 February14 July – 27 March4 August – 27 March
Celeriac26 May – 12 December11 August – 27 February1 September – 27 February
Celery26 May – 22 December11 August – 8 March1 September – 8 March
Celosiafrom 31 Julyfrom 14 Septemberfrom 5 October
Chamomile——sow 4 August – 27 March
Chayote24 May – 5 December20 August – 2 March10 September – 2 March
Chickpea——sow 4 August – 11 February
Chicory19 June – 7 March—4 August – 1 April
Chili Pepper29 July – 17 January27 September – 17 March18 October – 17 March
China asterfrom 6 Augustfrom 27 Septemberfrom 18 October
Chives——sow 4 August – 18 March
Cilantro——sow 4 August – 28 March
Corn——sow 10 September – 11 February
Corn poppy——sow from 4 August
Cosmosfrom 31 Julyfrom 14 Septemberfrom 5 October
Cucumber30 August – 17 February27 September – 16 March18 October – 16 March
Daikon——sow 4 August – 25 March
Delphiniumfrom 16 May—from 4 August
Dill——sow 4 August – 7 April
Edging lobeliafrom 9 June—from 1 September
Eggplant29 July – 11 December27 September – 9 February18 October – 9 February
Florence fennel27 June – 21 February11 August – 6 April1 September – 6 April
Foxglovefrom 28 April—from 4 August
Garden sorrel——sow 4 August – 26 March
Green Beans——sow 5 October – 19 February
Hollyhock——sow from 4 August
Hyssop——sow 4 August – 17 February
Kale——sow 4 August – 20 March
Kiwano4 August – 24 February5 September – 27 March26 September – 27 March
Kohlrabi——sow 4 August – 30 March
Leek5 May – 3 December14 July – 11 February4 August – 11 February
Lemon balm——sow 4 August – 22 March
Lettuce——sow 4 August – 4 April
Lisianthusfrom 18 Aprilfrom 14 Julyfrom 4 August
Lovage——sow from 4 August
Luffa16 August – 19 December27 September – 30 January18 October – 30 January
Marigoldfrom 30 Junefrom 11 Augustfrom 1 September
Marjoram29 July – 7 March—18 October – 6 May
Melon30 August – 4 February27 September – 3 March18 October – 3 March
Microgreens——sow 5 October – 17 May
Moringa21 August – 12 March15 October – 6 May5 November – 6 May
Moss rosefrom 16 June—from 1 September
Mustard greens——sow 4 August – 16 April
Napa cabbage9 July – 17 March11 August – 19 April1 September – 19 April
Nasturtiumfrom 4 Julyfrom 11 Augustfrom 1 September
Okra16 August – 29 February27 September – 11 April18 October – 11 April
Oregano15 May – 26 February14 July – 26 April4 August – 26 April
Pansyfrom 19 Mayfrom 14 Julyfrom 4 August
Parsley——sow 4 August – 16 March
Parsnip——sow 4 August – 3 February
Peanut21 August – 25 January27 September – 2 March18 October – 2 March
Peas——sow 4 August – 18 March
Petuniafrom 26 Julyfrom 27 Septemberfrom 18 October
Physalis22 July – 22 January5 September – 7 March26 September – 7 March
Pumpkin16 August – 24 December27 September – 4 February18 October – 4 February
Purple coneflowerfrom 13 May—from 4 August
Radish——sow 4 August – 1 May
Sage26 May – 22 February14 July – 11 April4 August – 11 April
Scarlet sagefrom 15 July—from 26 September
Snapdragonfrom 10 Mayfrom 14 Julyfrom 4 August
Soybean——sow 18 October – 12 March
Spinach——sow 4 August – 6 April
Stevia18 July – 13 January5 September – 2 March26 September – 2 March
Stock——sow from 4 August
Sunflower——sow from 5 October
Sweet alyssum——sow from 4 August
Sweet Corn5 August – 7 March27 August – 29 March17 September – 29 March
Sweet peafrom 2 Junefrom 14 Julyfrom 4 August
Sweet William——sow from 4 August
Swiss Chard——sow 4 August – 1 April
Thyme——sow 4 August – 11 February
Tomato15 July – 19 December5 September – 9 February26 September – 9 February
Turnip——sow 4 August – 3 April
Watercress——sow 4 August – 14 April
Watermelon30 August – 23 January27 September – 20 February18 October – 20 February
Zinniafrom 10 Septemberfrom 15 Octoberfrom 5 November
Zucchini6 September – 22 February27 September – 14 March18 October – 14 March

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. Each window starts on the Greenly calendar date and ends on the last day that still leaves the crop’s days to harvest (from its card) before the average first autumn frost, plus six weeks of picking for crops harvested over weeks (tomatoes, peppers, aubergines, cucumbers, courgettes, pumpkins, watermelons, beans) — our rule; earlier in the window is safer.

When the soil warms up in General Roca

The day the top 7 cm of soil first averages each temperature over a week, median of 2016–2025 (ERA5 via Open-Meteo). The soil reaches 10 °C 2 days after the last spring frost and 15 °C 32 days after it.

SoilDateAgainst the last spring frost
5 °C9 July47 days earlier
10 °C27 August2 days later
15 °C26 September32 days later
18 °C18 October54 days later

Frost dates near General Roca

Of the nearest cities on our list, the last spring frost ends earliest in Neuquén (25 August) and latest in Bariloche (27 December).

CityDistanceLast spring frostFirst autumn frost
Neuquén42 km25 August9 June
Santa Rosa394 km25 August13 June
Bariloche395 km27 December11 January
Villarrica402 km12 September11 June
Temuco436 km5 September23 May

What to grow at home in winter in General Roca

Frosts in General Roca usually come from about 1 June to about 25 August. These plants have indoor care in their Greenly cards and are harvested quickly, so they can be sown on a windowsill in winter.

Weather in General Roca by month

Average weather in General Roca over 2016–2025: the warmest month is January. Months that average 20 °C or more by day: October–April (20.9–32 °C). Months that average 30 °C or more by day: January (32 °C), February (30.6 °C) and December (30.5 °C). No month averages below 0 °C at night; the coldest nights, in July, average 2.1 °C. About 253 mm of rain falls in a year, on 41 days; April is the wettest month (32 mm) and January the driest (14 mm).

MonthDay, °CNight, °CRain, mmRainy days
January3218.7143
February30.617.4163
March26.614.2162
April20.910.3324
May15.45.9265
June12.23.1194
July11.62.1294
August154153
September18.96.7153
October22.59.9263
November2713.8304
December30.516.8153

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

CropWhen to plant
Bearded Irisby 2 May
Crocusby 2 May
Daffodilby 2 May
Garlic2 May – end of June
Grape hyacinthby 2 May
Helleboreby 2 May
Hyacinthby 2 May
Lilyby 2 May
Ornamental onionby 2 May
Peonyby 2 May
Saffronby 2 May
Snowdropby 2 May
Tulipby 2 May
Wild garlicby 2 May

From a month before the first autumn frost, so the roots grow before winter, to the late-planting limit on each crop’s page (about two weeks before the ground freezes, by ten years of weather).