When to plant tomatoes in Dijon: 17 May – 30 July

In Dijon, tomato: sow for seedlings from 5 March to 8 June; plant into a greenhouse from 26 April to 30 July; plant out into open ground from 17 May to 30 July. For plants and seeds, the places nearby include La Ressourcerie Végétale (garden centre, 1 km) and Jardiland (garden centre, 4 km); addresses and opening hours are below.

Tomato in Dijon: soil, season and weather

In Dijon the soil, not frost, sets the date: the last frost is over around 12 April, but the top 7 cm of soil reaches 15 °C — the minimum on the tomato card — only around 17 May, 35 days later.

Last spring frost	12 April
Top 7 cm of soil at 15 °C	17 May, 35 days after the last frost
Into an unheated greenhouse	26 April – 30 July; April outside: 5.4 °C at night, 15.3 °C by day; card 16–27 °C
First autumn frost	19 November, 186 days after the start
Days in the bed to the first harvest (card)	70
First harvest, if planted in this window	26 July – 8 October
Days left for picking	116
Daylight	12:28 on 26 March, 15:09 on 17 May
Watering outdoors when fruiting (card)	every 3 days; the driest month, July, has 9 rainy days

Tomato in Dijon: care after planting

Planted on 17 May: in the first weeks water every 4 days.

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

17 May — feed: balanced (NPK)
14 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 Dijon during the tomato season

No month of the season averages above the tomato card's 16–27 °C by day; the warmest, August, averages 26.4 °C. Months that stay below 16 °C even by day on average: November (9.9 °C). Nights average below 16 °C in every month of the season, from 3.6 °C to 15.5 °C.

Month	Day, °C	Night, °C	Rain, mm	Rainy days	Daylight on the 15th
May	18.9	9.4	78	12	15:04
June	24.4	14.1	89	13	15:55
July	26.1	15.5	59	9	15:35
August	26.4	15.5	60	8	14:17
September	21.9	12.1	61	9	12:37
October	16.6	8.6	90	12	10:56
November	9.9	3.6	78	12	9:22

ERA5 2016–2025, Open-Meteo

Tomato in nearby cities

Around Dijon, Troyes is 5 days earlier and Fribourg 19 days later.

City	Distance	Date	Difference
Besançon	74 km	16 May – 29 July	1 day earlier
Troyes	130 km	12 May – 29 July	5 days earlier
Neuchâtel	148 km	14 May – 8 August	3 days earlier
Lausanne	150 km	2 June – 31 July	16 days later
Geneva	150 km	28 May – 28 July	11 days later
Fribourg	170 km	5 June – 17 July	19 days later

Where to buy tomato plants and seeds near Dijon

Buy plants ready to set out from 17 May to 30 July (from 26 April to 30 July for an unheated greenhouse); seed for raising your own is sown from 5 March to 8 June. Within 15 km of Dijon OpenStreetMap lists 11 garden centres, 1 farm-supply shop, 1 plant nursery, 11 markets and 7 farm shops (collected 20 October 2026).

Jardiland — garden centre
Rue de Longvic, 21300 Chenôve · Mon–Sat 09:30–19:00; Sun 09:30–12:30, 14:00–19:00 · 4 km · jardiland.com
Botanic — garden centre
D 903, 21000 Dijon · Mon–Sat 09:00–19:00; Sun 09:30–12:30, 14:00–18:30 · 5 km · botanic.com
La Ressourcerie Végétale — garden centre
Rue des Roses 33 · Wed, Sat 14:00–18:00 · 1 km · laressourcerievegetale.fr
Villaverde — garden centre
Mon–Fri 09:30–12:00, 14:00–19:00; Sat 09:30–19:00; 2026 Nov 11 09:30–12:00, 14:30–18:30; 2026 Dec 25 closed; 2027 Jan 01 closed; 2027 May 01 09:30–12:30, 14:30–18:30; 2027 Jul 14 closed; 2027 Aug 15 closed; public holidays, Sun 09:30–12:30, 14:30–18:30 · 7 km · villaverde.fr

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