When to plant tomatoes in Clermont-Ferrand: 6 June – 23 July

In Clermont-Ferrand, tomato: sow for seedlings from 25 March to 1 June; plant into a greenhouse from 16 May to 23 July; plant out into open ground from 6 June to 23 July. For plants and seeds, the places nearby include Jardiland (garden centre, 3 km) and Botanic Beaumont (garden centre, 4 km); addresses and opening hours are below.

Tomato in Clermont-Ferrand: soil, season and weather

In Clermont-Ferrand 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 6 June, 52 days later.

Last spring frost	15 April
Top 7 cm of soil at 15 °C	6 June, 52 days after the last frost
Into an unheated greenhouse	16 May – 23 July; May outside: 6.5 °C at night, 14.9 °C by day; card 16–27 °C
First autumn frost	12 November, 159 days after the start
Days in the bed to the first harvest (card)	70
First harvest, if planted in this window	15 August – 1 October
Days left for picking	89
Daylight	13:30 on 15 April, 15:34 on 6 June
Watering outdoors when fruiting (card)	every 3 days; the driest month, July, has 10 rainy days

Tomato in Clermont-Ferrand: care after planting

Planted on 6 June: in the first weeks water every 4 days.

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

6 June — feed: balanced (NPK)
4 July — 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 Clermont-Ferrand during the tomato season

No month of the season averages above the tomato card's 16–27 °C by day; the warmest, August, averages 22.5 °C. Months that stay below 16 °C even by day on average: October (14.4 °C) and November (8.3 °C). Nights average below 16 °C in every month of the season, from 2.1 °C to 12.8 °C.

Month	Day, °C	Night, °C	Rain, mm	Rainy days	Daylight on the 15th
June	19.9	11.2	129	15	15:42
July	22.1	12.6	58	10	15:23
August	22.5	12.8	60	10	14:10
September	18.4	9.5	70	11	12:36
October	14.4	6.6	74	11	11:00
November	8.3	2.1	81	14	9:30

ERA5 2016–2025, Open-Meteo

Tomato in nearby cities

Around Clermont-Ferrand, Valence is 36 days earlier and Grenoble 14 days later.

City	Distance	Date	Difference
Saint-Étienne	109 km	30 May – 28 July	7 days earlier
Lyon	137 km	2 May – 5 August	35 days earlier
Limoges	141 km	28 May – 7 August	9 days earlier
Valence	171 km	1 May – 1 August	36 days earlier
Grenoble	216 km	20 June – 5 July	14 days later
Chambéry	222 km	13 May – 31 July	24 days earlier

Where to buy tomato plants and seeds near Clermont-Ferrand

Buy plants ready to set out from 6 June to 23 July (from 16 May to 23 July for an unheated greenhouse); seed for raising your own is sown from 25 March to 1 June. Within 15 km of Clermont-Ferrand OpenStreetMap lists 13 garden centres, 7 farm-supply shops, 13 markets and 8 farm shops (collected 20 October 2026).

Jardiland — garden centre
Avenue de l'Europe 64 · Mon–Fri 09:30–12:30, 14:00–19:00; Sat 09:30–19:00; Sun 09:30–12:30, 14:00–19:00 · 8 km · jardiland.com
Botanic Beaumont — garden centre
Rue du Sou 285, 63110 Beaumont · Mon–Sat 09:00–19:00, Sun 09:30–12:30, 14:00–19:00 · 4 km
Jardi E.Leclerc — garden centre
Avenue Ernest Cristal 66 · Sun–Fri 09:30–12:00, 14:00–19:00; Sat 09:30–19:00 · 5 km
Jardiland — garden centre
Mon–Sat 09:30–19:00; Sun 09:30–12:30, 14:00–19:00 · 3 km · jardiland.com

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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