When to plant pumpkins in Ushuaia

In Ushuaia, pumpkin: sow for seedlings from 17 October; plant into a greenhouse from 28 November; plant out into open ground from 19 December. The frost-free season here is shorter than the 75 days the crop needs from planting to harvest (by its card): grow it in a greenhouse or choose an early variety.

Pumpkin in Ushuaia: soil, season and weather

In the median year the top 7 cm of soil in Ushuaia does not reach 18 °C, the minimum on the pumpkin card, before August; the date follows the last frost (12 December), and the bed stays cooler than the card asks. Only 38 days lie between planting out (19 December) and the first autumn frost (26 January), against the card's 75 days to the first harvest: even an unheated greenhouse, three weeks earlier, falls 16 days short without heat or a faster variety.

Last spring frost	12 December
First autumn frost	26 January, 38 days after the start
Days in the bed to the first harvest (card)	75
Days left for picking	-37
Daylight	15:28 on 7 November, 17:19 on 19 December
Watering outdoors when fruiting (card)	every 5 days; the driest month, December, has 22 rainy days

The same dates in Ushuaia hold for Tomato, Cucumber, Bell Pepper, Eggplant, Zucchini and Watermelon.

Pumpkin in Ushuaia: care after planting

Planted on 19 December: in the first weeks water every 4 days.

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

9 January — feed: nitrogen

Pests and diseases of pumpkin 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 Ushuaia during the pumpkin season

About 220 mm of rain falls in the season; December is the driest month (104 mm) and January the wettest (116 mm).

Month	Day, °C	Night, °C	Rain, mm	Rainy days	Daylight on the 15th
December	10.2	3.3	104	22	17:16
January	11	4.3	116	23	16:42

ERA5 2016–2025, Open-Meteo

Pumpkin in nearby cities

Around Ushuaia, Trelew is 58 days earlier and Puerto Montt 10 days later.

City	Distance	Date	Difference
Punta Arenas	250 km	4 November – 11 December	45 days earlier
Río Gallegos	360 km	12 December – 21 January	7 days earlier
Comodoro Rivadavia	997 km	1 November – 27 January	48 days earlier
Coyhaique	1,061 km	from 10 December	9 days earlier
Trelew	1,304 km	22 October – 1 February	58 days earlier
Puerto Montt	1,522 km	29 December – 9 February	10 days later

Where to buy pumpkin plants and seeds near Ushuaia

Buy plants ready to set out from 19 December (from 28 November for an unheated greenhouse); seed for raising your own is sown from 17 October. Within 15 km of Ushuaia OpenStreetMap lists 3 markets (collected 27 October 2026).

Mar de Cobos — market
2 km
Champita — market
2 km
Mercado De la Costa — market
6 km

Questions