When to plant cucumbers in Colonia del Sacramento: from 15 October

In Colonia del Sacramento, cucumber: sow for seedlings from 27 August; plant into a greenhouse from 24 September; plant out into open ground from 15 October. There is no autumn frost here, so the frost dates set no end to the window.

Cucumber in Colonia del Sacramento: soil, season and weather

In Colonia del Sacramento the soil, not frost, sets the date: the last frost is over around 9 July, but the top 7 cm of soil reaches 18 °C — the minimum on the cucumber card — only around 15 October, 98 days later. Colonia del Sacramento has no autumn frost in the median year, so frost does not end the season.

Last spring frost	9 July
Top 7 cm of soil at 18 °C	15 October, 98 days after the last frost
Into an unheated greenhouse	from 24 September; September outside: 10.8 °C at night, 18.6 °C by day; card 18–25 °C
Days in the bed to the first harvest (card)	34
First harvest, if planted in this window	from 18 November
Daylight	11:55 on 17 September, 12:55 on 15 October
Watering outdoors when fruiting (card)	every 2 days; the driest month, January, has 10 rainy days

The same dates in Colonia del Sacramento hold for Bell Pepper, Eggplant, Zucchini, Pumpkin and Watermelon.

Cucumber in Colonia del Sacramento: care after planting

Planted on 15 October: in the first weeks water every 4 days.

Feeding, by the card’s schedule from that day:

22 October — feed: nitrogen

Pests and diseases of cucumber to watch for:

Dates count from the first planting day of the window above; a later planting moves them by as many days.

Weather in Colonia del Sacramento during the cucumber season

No month of the season averages above the cucumber card's 18–35 °C by day; the warmest, January, averages 28.9 °C. Nights average below 18 °C in October (13.2 °C) and November (16.2 °C).

Month	Day, °C	Night, °C	Rain, mm	Rainy days	Daylight on the 15th
October	21.3	13.2	96	10	12:55
November	25	16.2	86	8	13:55
December	27.5	18.5	81	8	14:26
January	28.9	20.5	80	10	14:12
February	28.1	20.1	84	8	13:20
March	25.6	18.1	142	10	12:20

ERA5 2016–2025, Open-Meteo

Cucumber in nearby cities

Around Colonia del Sacramento, Salto is 54 days earlier and Maldonado 9 days later.

City	Distance	Date	Difference
La Plata	51 km	20 October – 1 April	5 days later
Buenos Aires	52 km	from 7 October	8 days earlier
Paysandú	240 km	21 September – 11 April	24 days earlier
Maldonado	269 km	from 24 October	9 days later
Rosario	309 km	29 September – 30 March	16 days earlier
Salto	344 km	from 22 August	54 days earlier

Where to buy cucumber plants and seeds near Colonia del Sacramento

Buy plants ready to set out from 15 October (from 24 September for an unheated greenhouse); seed for raising your own is sown from 27 August. Within 15 km of Colonia del Sacramento OpenStreetMap lists 1 garden centre and 1 farm-supply shop (collected 28 October 2026).

Vivero — garden centre
4 km
Agro Jardín Colonia — farm supply
0 km

Questions