When to plant tomatoes in Aranda de Duero: 11 May – 24 July

In Aranda de Duero, tomato: sow for seedlings from 27 February to 2 June; plant into a greenhouse from 20 April to 24 July; plant out into open ground from 11 May to 24 July. For plants and seeds, the places nearby include La Morera (garden centre, 1 km); addresses and opening hours are below.

Tomato in Aranda de Duero: soil, season and weather

In Aranda de Duero the soil, not frost, sets the date: the last frost is over around 15 April, but the top 7 cm of soil reaches 15 °C — the minimum on the tomato card — only around 11 May, 26 days later.

Last spring frost	15 April
Top 7 cm of soil at 15 °C	11 May, 26 days after the last frost
Into an unheated greenhouse	20 April – 24 July; April outside: 4.6 °C at night, 16.8 °C by day; card 16–27 °C
First autumn frost	13 November, 186 days after the start
Days in the bed to the first harvest (card)	70
First harvest, if planted in this window	20 July – 2 October
Days left for picking	116
Daylight	12:07 on 20 March, 14:23 on 11 May
Watering outdoors when fruiting (card)	every 3 days; the driest month, July, has 2 rainy days

Tomato in Aranda de Duero: care after planting

Planted on 11 May: in the first weeks water every 4 days.

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

11 May — feed: balanced (NPK)
8 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 Aranda de Duero during the tomato season

Days average above the tomato card's 16–27 °C in July (30.8 °C) and August (30.9 °C). Months that stay below 16 °C even by day on average: November (12.6 °C). Nights average below 16 °C in every month of the season, from 3.6 °C to 15.8 °C.

Month	Day, °C	Night, °C	Rain, mm	Rainy days	Daylight on the 15th
May	21	8	45	9	14:31
June	26.4	12.8	37	8	15:11
July	30.8	15.5	7	2	14:55
August	30.9	15.8	8	2	13:53
September	25.1	11.5	24	4	12:31
October	20.2	8.2	54	8	11:09
November	12.6	3.6	63	11	9:52

ERA5 2016–2025, Open-Meteo

Tomato in nearby cities

Around Aranda de Duero, Valladolid is 12 days earlier and Segovia 9 days later.

City	Distance	Date	Difference
Burgos	75 km	15 May – 28 July	4 days later
Palencia	78 km	9 May – 23 July	2 days earlier
Valladolid	86 km	29 April – 7 August	12 days earlier
Segovia	88 km	20 May – 19 July	9 days later
Soria	102 km	14 May – 20 July	3 days later
Guadalajara (Spain)	124 km	29 April – 4 August	12 days earlier

Where to buy tomato plants and seeds near Aranda de Duero

Buy plants ready to set out from 11 May to 24 July (from 20 April to 24 July for an unheated greenhouse); seed for raising your own is sown from 27 February to 2 June. Within 15 km of Aranda de Duero OpenStreetMap lists 4 garden centres (collected 28 October 2026).

La Morera — garden centre
Carretera de La Aguilera, 09400 Aranda de Duero · 1 km
Cecoga — garden centre
3 km · cecoga.es
Castilla — garden centre
3 km
Plantas Nuñez — garden centre
5 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