When to plant cucumbers in León (Spain): 25 May – 24 August

In León (Spain), cucumber: sow for seedlings from 6 April to 27 July; plant into a greenhouse from 4 May to 24 August; plant out into open ground from 25 May to 24 August.

Cucumber in León (Spain): soil, season and weather

In León (Spain) the soil, not frost, sets the date: the last frost is over around 14 April, but the top 7 cm of soil reaches 18 °C — the minimum on the cucumber card — only around 25 May, 41 days later.

Last spring frost	14 April
Top 7 cm of soil at 18 °C	25 May, 41 days after the last frost
Into an unheated greenhouse	4 May – 24 August; May outside: 7.6 °C at night, 20.9 °C by day; card 18–25 °C
First autumn frost	8 November, 167 days after the start
Days in the bed to the first harvest (card)	34
First harvest, if planted in this window	28 June – 27 September
Days left for picking	133
Daylight	13:53 on 27 April, 14:55 on 25 May
Watering outdoors when fruiting (card)	every 2 days; the driest month, July, has 3 rainy days

The same dates in León (Spain) hold for Bell Pepper, Eggplant, Zucchini, Pumpkin and Watermelon.

Cucumber in León (Spain): care after planting

Planted on 25 May: in the first weeks water every 4 days.

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

1 June — 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 León (Spain) during the cucumber season

No month of the season averages above the cucumber card's 18–35 °C by day; the warmest, July, averages 30.1 °C. Months that stay below 18 °C even by day on average: November (12.1 °C). Nights average below 18 °C in every month of the season, from 3.3 °C to 14.6 °C.

Month	Day, °C	Night, °C	Rain, mm	Rainy days	Daylight on the 15th
May	20.9	7.6	44	8	14:36
June	25.5	11.8	46	8	15:18
July	30.1	14.3	12	3	15:01
August	30.1	14.6	12	2	13:57
September	24.1	10.9	29	5	12:32
October	19.3	7.7	60	9	11:07
November	12.1	3.3	59	11	9:47

ERA5 2016–2025, Open-Meteo

Cucumber in nearby cities

Around León (Spain), Zamora is 15 days earlier and Oviedo 25 days later.

City	Distance	Date	Difference
Ponferrada	84 km	1 June – 12 September	7 days later
Oviedo	88 km	19 June – 21 September	25 days later
Gijón	105 km	11 June – 2 October	17 days later
Palencia	108 km	25 May – 28 August	same day
Zamora	122 km	10 May – 3 September	15 days earlier
Valladolid	127 km	15 May – 12 September	10 days earlier

Where to buy cucumber plants and seeds near León (Spain)

Buy plants ready to set out from 25 May to 24 August (from 4 May to 24 August for an unheated greenhouse); seed for raising your own is sown from 6 April to 27 July. Within 15 km of León (Spain) OpenStreetMap lists 1 plant nursery and 1 market (collected 27 October 2026).

Mercado del Conde Luna — market
Mon–Thu 09:00–15:00; Fri, Sat 08:00–15:00 · 0 km
Viveros Galileo — plant nursery
6 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