When to plant tomatoes in Troyes: 12 May – 29 July

In Troyes, tomato: sow for seedlings from 28 February to 7 June; plant into a greenhouse from 21 April to 29 July; plant out into open ground from 12 May to 29 July. For plants and seeds, the places nearby include Kiriel Jardin (garden centre, 2 km) and Jardiland (garden centre, 3 km); addresses and opening hours are below.

Tomato in Troyes: soil, season and weather

In Troyes the soil, not frost, sets the date: the last frost is over around 4 April, but the top 7 cm of soil reaches 15 °C — the minimum on the tomato card — only around 12 May, 38 days later.

Last spring frost	4 April
Top 7 cm of soil at 15 °C	12 May, 38 days after the last frost
Into an unheated greenhouse	21 April – 29 July; April outside: 5.3 °C at night, 15.5 °C by day; card 16–27 °C
First autumn frost	18 November, 190 days after the start
Days in the bed to the first harvest (card)	70
First harvest, if planted in this window	21 July – 7 October
Days left for picking	120
Daylight	12:11 on 21 March, 15:03 on 12 May
Watering outdoors when fruiting (card)	every 3 days; the driest month, August, has 9 rainy days

Tomato in Troyes: care after planting

Planted on 12 May: in the first weeks water every 4 days.

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

12 May — feed: balanced (NPK)
9 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 Troyes during the tomato season

No month of the season averages above the tomato card's 16–27 °C by day; the warmest, August, averages 25.7 °C. Months that stay below 16 °C even by day on average: November (10.8 °C). Nights average below 16 °C in every month of the season, from 4.3 °C to 15.2 °C.

Month	Day, °C	Night, °C	Rain, mm	Rainy days	Daylight on the 15th
May	19.2	9.3	70	12	15:11
June	23.9	13.8	76	12	16:04
July	25.5	15.2	57	8	15:43
August	25.7	15.2	46	9	14:22
September	22.1	12.1	59	10	12:38
October	17.1	9	74	12	10:54
November	10.8	4.3	77	14	9:16

ERA5 2016–2025, Open-Meteo

Tomato in nearby cities

Around Troyes, Paris is 1 day earlier and Dijon 5 days later.

City	Distance	Date	Difference
Reims	107 km	14 May – 28 July	2 days later
Dijon	130 km	17 May – 30 July	5 days later
Paris	142 km	11 May – 31 July	1 day earlier
Nancy	160 km	16 May – 28 July	4 days later
Orléans	169 km	11 May – 5 August	1 day earlier
Metz	178 km	16 May – 28 July	4 days later

Where to buy tomato plants and seeds near Troyes

Buy plants ready to set out from 12 May to 29 July (from 21 April to 29 July for an unheated greenhouse); seed for raising your own is sown from 28 February to 7 June. Within 15 km of Troyes OpenStreetMap lists 6 garden centres, 2 markets and 4 farm shops (collected 27 October 2026).

Kiriel Jardin — garden centre
Avenue Michel Baroin 140, 10800 Saint-Julien-les-Villas · Mon–Sat 08:00–12:00, 14:00–18:00 · 2 km
Jardiland — garden centre
Mon–Fri 09:30–12:00, 14:00–19:00; Sat 09:30–19:00; Sun 10:00–12:30, 14:30–18:30 · 3 km · jardiland.com
Les Halles — market
Mon–Thu 08:00–12:45, 15:30–19:00; Fri, Sat 07:00–19:00; Sun 09:00–13:00 · 1 km · troyeslachampagne.com
Marché Isle-Aumont — market
Fri 16:00–19:00 · 10 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.

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