When to plant tomatoes in León (Spain): 4 May – 19 July

In León (Spain), tomato: sow for seedlings from 20 February to 28 May; plant into a greenhouse from 13 April to 19 July; plant out into open ground from 4 May to 19 July.

Tomato 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 15 °C — the minimum on the tomato card — only around 4 May, 20 days later.

Last spring frost	14 April
Top 7 cm of soil at 15 °C	4 May, 20 days after the last frost
Into an unheated greenhouse	13 April – 19 July; April outside: 4.2 °C at night, 16.8 °C by day; card 16–27 °C
First autumn frost	8 November, 188 days after the start
Days in the bed to the first harvest (card)	70
First harvest, if planted in this window	13 July – 27 September
Days left for picking	118
Daylight	11:47 on 13 March, 14:11 on 4 May
Watering outdoors when fruiting (card)	every 3 days; the driest month, July, has 3 rainy days

Tomato in León (Spain): care after planting

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

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

4 May — feed: balanced (NPK)
1 June — feed: nitrogen

Pests and diseases of tomato 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 tomato season

Days average above the tomato card's 16–27 °C in July (30.1 °C) and August (30.1 °C). Months that stay below 16 °C even by day on average: November (12.1 °C). Nights average below 16 °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

Tomato in nearby cities

Around León (Spain), Zamora is 13 days earlier and Oviedo 23 days later.

City	Distance	Date	Difference
Ponferrada	84 km	10 May – 7 August	6 days later
Oviedo	88 km	27 May – 16 August	23 days later
Gijón	105 km	13 May – 27 August	9 days later
Palencia	108 km	9 May – 23 July	5 days later
Zamora	122 km	21 April – 29 July	13 days earlier
Valladolid	127 km	29 April – 7 August	5 days earlier

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

Buy plants ready to set out from 4 May to 19 July (from 13 April to 19 July for an unheated greenhouse); seed for raising your own is sown from 20 February to 28 May. 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