When to plant zucchini in Brest (France): 20 June – 26 September

In Brest (France), zucchini: sow for seedlings from 9 May to 5 September; plant into a greenhouse from 30 May to 26 September; plant out into open ground from 20 June to 26 September.

Zucchini 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 18 °C — the minimum on the zucchini card — only around 20 June, 119 days later.

Last spring frost	21 February
Top 7 cm of soil at 18 °C	20 June, 119 days after the last frost
First autumn frost	13 December, 176 days after the start
Days in the bed to the first harvest (card)	36
First harvest, if planted in this window	26 July – 1 November
Days left for picking	140
Daylight	15:45 on 30 May, 16:06 on 20 June
Watering outdoors when fruiting (card)	every 3 days; the driest month, July, has 13 rainy days

The same dates in Brest (France) hold for Cucumber, Bell Pepper, Eggplant, Pumpkin and Watermelon.

Zucchini in Brest (France): care after planting

Planted on 20 June: in the first weeks water every 4 days.

Pests and diseases of zucchini to watch for:

Weather in Brest (France) during the zucchini season

About 703 mm of rain falls in the season; July is the driest month (65 mm) and December the wettest (143 mm).

Month	Day, °C	Night, °C	Rain, mm	Rainy days	Daylight on the 15th
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

Zucchini in nearby cities

Around Brest (France), Nantes is 23 days earlier and Plymouth 27 days later.

City	Distance	Date	Difference
Quimper	52 km	15 June – 22 September	5 days earlier
Rennes	210 km	1 June – 11 September	19 days earlier
Plymouth	222 km	17 July – 14 September	27 days later
Nantes	255 km	28 May – 12 September	23 days earlier
Exeter	268 km	23 June – 10 September	3 days later
Angers	311 km	28 May – 10 September	23 days earlier

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

Buy plants ready to set out from 20 June to 26 September (from 30 May to 26 September for an unheated greenhouse); seed for raising your own is sown from 9 May to 5 September. Within 15 km of Brest (France) OpenStreetMap lists 13 garden centres, 1 plant nursery, 22 markets and 15 farm shops (collected 27 October 2026).

Marché de Saint-Pierre — market
Place de Quilbignon, 29200 · Wed 08:30–12:30 · 4 km · brest.fr
Marché Sanquer — market
Wed 08:30–12:30 · 1 km · brest.fr
Halles de Kerinou — market
Tue 15:30–20:00; Sat 08:00–12:30 · 1 km · brest.fr
Marché de Bellevue — market
Place Napoléon III · Thu 08:30–12:30 · 2 km · brest.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