When to plant pumpkins in Jaca: 19 June – 6 July

In Jaca, pumpkin: sow for seedlings from 17 April to 25 May; plant into a greenhouse from 29 May to 6 July; plant out into open ground from 19 June to 6 July.

Pumpkin in Jaca: soil, season and weather

In Jaca the soil, not frost, sets the date: the last frost is over around 3 May, but the top 7 cm of soil reaches 18 °C — the minimum on the pumpkin card — only around 19 June, 47 days later. 134 days separate planting out (19 June) from the first autumn frost (31 October); the card's 75 days to the first harvest leave 59 for picking, so a start 8 weeks late would still fit.

Last spring frost	3 May
Top 7 cm of soil at 18 °C	19 June, 47 days after the last frost
First autumn frost	31 October, 134 days after the start
Days in the bed to the first harvest (card)	75
First harvest, if planted in this window	2 September – 19 September
Days left for picking	59
Daylight	14:20 on 8 May, 15:18 on 19 June
Watering outdoors when fruiting (card)	every 5 days; the driest month, July, has 6 rainy days

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

Pumpkin in Jaca: care after planting

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

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

10 July — 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 Jaca during the pumpkin season

About 325 mm of rain falls in the season; July is the driest month (39 mm) and October the wettest (90 mm).

Month	Day, °C	Night, °C	Rain, mm	Rainy days	Daylight on the 15th
June	22.8	10	72	11	15:17
July	26.4	12.5	39	6	15:01
August	26.8	12.8	49	6	13:57
September	20.9	8.7	75	8	12:32
October	16.6	5.4	90	10	11:07

ERA5 2016–2025, Open-Meteo

Pumpkin in nearby cities

All the nearest cities on our list plant pumpkin earlier than Jaca; the closest date is in Pau, 17 days earlier.

City	Distance	Date	Difference
Huesca	47 km	23 May – 1 August	27 days earlier
Pau	86 km	2 June – 9 August	17 days earlier
Pamplona	94 km	1 June – 5 August	18 days earlier
Tudela	102 km	6 May – 12 August	44 days earlier
Zaragoza	104 km	30 April – 25 August	50 days earlier
Bayonne	129 km	28 May – 22 August	22 days earlier

Where to buy pumpkin plants and seeds near Jaca

Buy plants ready to set out from 19 June to 6 July (from 29 May to 6 July for an unheated greenhouse); seed for raising your own is sown from 17 April to 25 May. Within 15 km of Jaca OpenStreetMap lists 1 farm shop (collected 28 October 2026).

Comercial Agraria El Llano — farm shop
2 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.

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