When to plant pumpkins in Bahía Blanca: 5 November – 18 February

In Bahía Blanca, pumpkin: sow for seedlings from 3 September to 7 January; plant into a greenhouse from 15 October to 18 February; plant out into open ground from 5 November to 18 February. For plants and seeds, the places nearby include Vivero las Magnolias (garden centre, 2 km); addresses and opening hours are below.

Pumpkin in Bahía Blanca: soil, season and weather

In Bahía Blanca the soil, not frost, sets the date: the last frost is over around 8 August, but the top 7 cm of soil reaches 18 °C — the minimum on the pumpkin card — only around 5 November, 89 days later.

Last spring frost	8 August
Top 7 cm of soil at 18 °C	5 November, 89 days after the last frost
First autumn frost	14 June, 222 days after the start
Days in the bed to the first harvest (card)	75
First harvest, if planted in this window	19 January – 3 May
Days left for picking	147
Daylight	12:11 on 24 September, 13:53 on 5 November
Watering outdoors when fruiting (card)	every 5 days; the driest month, June, has 5 rainy days

The same dates in Bahía Blanca hold for Cucumber, Bell Pepper, Eggplant, Zucchini and Watermelon.

Pumpkin in Bahía Blanca: care after planting

Planted on 5 November: in the first weeks water every 4 days.

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

26 November — 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 Bahía Blanca during the pumpkin season

About 444 mm of rain falls in the season; June is the driest month (29 mm) and March the wettest (80 mm).

Month	Day, °C	Night, °C	Rain, mm	Rainy days	Daylight on the 15th
November	25	14.2	71	7	14:13
December	28.8	16.8	54	6	14:51
January	30.4	19.1	53	6	14:34
February	28.6	18	48	7	13:33
March	25.7	15.8	80	7	12:23
April	21	12.3	63	7	11:06
May	16.2	8.4	46	6	10:03
June	13.4	5.8	29	5	9:28

ERA5 2016–2025, Open-Meteo

Pumpkin in nearby cities

Around Bahía Blanca, Buenos Aires is 29 days earlier and Mar del Plata 7 days later.

City	Distance	Date	Difference
Santa Rosa	293 km	22 October – 16 February	14 days earlier
Mar del Plata	418 km	from 12 November	7 days later
Neuquén	502 km	17 October – 12 February	19 days earlier
Trelew	565 km	22 October – 1 February	14 days earlier
La Plata	571 km	20 October – 20 February	16 days earlier
Buenos Aires	575 km	from 7 October	29 days earlier

Where to buy pumpkin plants and seeds near Bahía Blanca

Buy plants ready to set out from 5 November to 18 February (from 15 October to 18 February for an unheated greenhouse); seed for raising your own is sown from 3 September to 7 January. Within 15 km of Bahía Blanca OpenStreetMap lists 9 garden centres and 4 markets (collected 27 October 2026).

Vivero las Magnolias — garden centre
Brasil 86, 8000 Bahía Blanca · 2 km
La Ilusión — market
Avenida Alem 1104, 8000 Bahía Blanca · 2 km · lailusiononline.com.ar
Mercado Municipal — market
Donado, 8000 Bahía Blanca · 0 km
Vivero Municipal — garden centre
3 km

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.

Questions