When to plant tomatoes in Brest (France): 26 May – 23 August

In Brest (France), tomato: sow for seedlings from 14 March to 2 July; plant into a greenhouse from 5 May to 23 August; plant out into open ground from 26 May to 23 August. For plants and seeds, the places nearby include Magasin Vert (garden centre, 4 km) and Jardiland (garden centre, 5 km); addresses and opening hours are below.

Tomato in Brest (France): soil, season and weather

In Brest (France) the soil, not frost, sets the date: the last frost is over around 21 February, but the top 7 cm of soil reaches 15 °C — the minimum on the tomato card — only around 26 May, 94 days later.

Last spring frost	21 February
Top 7 cm of soil at 15 °C	26 May, 94 days after the last frost
Into an unheated greenhouse	5 May – 23 August; May outside: 9.4 °C at night, 16.8 °C by day; card 16–27 °C
First autumn frost	13 December, 201 days after the start
Days in the bed to the first harvest (card)	70
First harvest, if planted in this window	4 August – 1 November
Days left for picking	131
Daylight	13:01 on 4 April, 15:38 on 26 May
Watering outdoors when fruiting (card)	every 3 days; the driest month, July, has 13 rainy days

Tomato in Brest (France): care after planting

Planted on 26 May: in the first weeks water every 4 days.

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

26 May — feed: balanced (NPK)
23 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 Brest (France) during the tomato season

No month of the season averages above the tomato card's 16–27 °C by day; the warmest, July, averages 20.9 °C. Months that stay below 16 °C even by day on average: October (15.9 °C), November (12.6 °C) and December (10.7 °C). Nights average below 16 °C in every month of the season, from 6.5 °C to 14 °C.

Month	Day, °C	Night, °C	Rain, mm	Rainy days	Daylight on the 15th
May	16.8	9.4	69	12	15:12
June	19.3	12.2	94	14	16:05
July	20.9	13.9	65	13	15:44
August	20.8	14	71	12	14:23
September	18.9	12.6	84	14	12:39
October	15.9	10.5	116	15	10:54
November	12.6	8.1	130	17	9:15
December	10.7	6.5	143	18	8:21

ERA5 2016–2025, Open-Meteo

Tomato in nearby cities

Around Brest (France), Nantes is 25 days earlier and Plymouth 26 days later.

City	Distance	Date	Difference
Quimper	52 km	19 May – 19 August	7 days earlier
Rennes	210 km	13 May – 8 August	13 days earlier
Plymouth	222 km	21 June – 11 August	26 days later
Nantes	255 km	1 May – 9 August	25 days earlier
Exeter	268 km	1 June – 7 August	6 days later
Angers	311 km	5 May – 7 August	21 days earlier

Where to buy tomato plants and seeds near Brest (France)

Buy plants ready to set out from 26 May to 23 August (from 5 May to 23 August for an unheated greenhouse); seed for raising your own is sown from 14 March to 2 July. Within 15 km of Brest (France) OpenStreetMap lists 13 garden centres, 1 plant nursery, 22 markets and 15 farm shops (collected 27 October 2026).

Magasin Vert — garden centre
Rue du Dr Augustin Jacq - Zone de l'Hermitage 125, 29200 Brest · Mon–Fri 09:30–13:00, 14:00–19:00; Sat 09:30–19:00; Sun 10:00–12:30, 14:30–18:30; 2026 Oct 11 closed; 2026 Nov 01 closed · 4 km · monmagasinvert.fr
Point Vert — garden centre
Route de Plouarzel 5, 29290 Saint-Renan · Mon–Fri 09:00–12:00, 14:00–18:30; Sat 09:00–12:30, 14:00–18:30 · 12 km · monmagasinvert.fr
Magasin Vert — garden centre
Route du Conquet, 29200 Brest · Mon–Fri 09:30–13:00, 14:00–19:00; Sat 09:30–19:00; Sun 10:00–12:30, 14:30–18:30; 2026 Oct 09 09:30–12:00, 14:00–19:00 · 5 km · monmagasinvert.fr
Jardiland — garden centre
Mon–Sat 09:30–19:00; Sun 10:00–12:30, 14:00–19:00 · 5 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.

Questions