When to plant tomatoes in Jaén: 4 April – 27 August

In Jaén, tomato: sow for seedlings from 21 January to 6 July; plant into a greenhouse from 14 March to 27 August; plant out into open ground from 4 April to 27 August. For plants and seeds, the places nearby include AgroJaén (garden centre, 1 km) and Agroganadera Dano (farm supply, 1 km); addresses and opening hours are below.

Tomato in Jaén: soil, season and weather

In Jaén the soil, not frost, sets the date: the last frost is over around 9 February, but the top 7 cm of soil reaches 15 °C — the minimum on the tomato card — only around 4 April, 54 days later.

Last spring frost	9 February
Top 7 cm of soil at 15 °C	4 April, 54 days after the last frost
Into an unheated greenhouse	14 March – 27 August; March outside: 7.5 °C at night, 17.8 °C by day; card 16–27 °C
First autumn frost	17 December, 257 days after the start
Days in the bed to the first harvest (card)	70
First harvest, if planted in this window	13 June – 5 November
Days left for picking	187
Daylight	10:39 on 11 February, 12:43 on 4 April
Watering outdoors when fruiting (card)	every 3 days; the driest month, July, has 1 rainy day

Tomato in Jaén: care after planting

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

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

4 April — feed: balanced (NPK)
2 May — 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 Jaén during the tomato season

Days average above the tomato card's 16–27 °C in June–September (30.1–36.4 °C). Months that stay below 16 °C even by day on average: December (14.8 °C). Nights average below 16 °C in April, May and October–December (6–14 °C).

Month	Day, °C	Night, °C	Rain, mm	Rainy days	Daylight on the 15th
April	21.1	10.1	59	9	13:09
May	26.1	13.7	35	5	14:12
June	31.7	18.4	15	3	14:46
July	36.4	21.9	2	1	14:32
August	36	22	5	1	13:39
September	30.1	17.8	22	4	12:28
October	25.2	14	47	6	11:16
November	17.4	8.6	63	9	10:09
December	14.8	6	50	8	9:34

ERA5 2016–2025, Open-Meteo

Tomato in nearby cities

Around Jaén, Écija is 21 days earlier and Granada 39 days later.

City	Distance	Date	Difference
Úbeda	46 km	13 April – 13 August	9 days later
Granada	68 km	13 May – 6 August	39 days later
Córdoba (Spain)	87 km	24 March – 7 September	11 days earlier
Écija	116 km	14 March – 7 September	21 days earlier
Ciudad Real	136 km	13 April – 8 August	9 days later
Lorca	184 km	20 March – 25 August	15 days earlier

Where to buy tomato plants and seeds near Jaén

Buy plants ready to set out from 4 April to 27 August (from 14 March to 27 August for an unheated greenhouse); seed for raising your own is sown from 21 January to 6 July. Within 15 km of Jaén OpenStreetMap lists 2 garden centres, 3 farm-supply shops, 8 markets and 1 farm shop (collected 27 October 2026).

Viveros Luis Moreno — garden centre
Camino de las Cabezadas, 23001 Jaén · Mon–Sat 09:00–14:00, 16:00–19:00; Sun 09:30–14:00 · 4 km · viverosjaenluismoreno.com
AgroJaén — garden centre
Calle de Sefarad 28, 23005 · 1 km
Lerma — farm supply
Calle Jabalquinto 22, 23009 Jaén · 4 km
Agroganadera Dano — farm supply
Calle Juan Montilla 26, 23002 · 1 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