When to plant zucchini in Caen: 15 June – 18 September

In Caen, zucchini: sow for seedlings from 4 May to 28 August; plant into a greenhouse from 25 May to 18 September; plant out into open ground from 15 June to 18 September.

Zucchini in Caen: soil, season and weather

In Caen the soil, not frost, sets the date: the last frost is over around 12 March, but the top 7 cm of soil reaches 18 °C — the minimum on the zucchini card — only around 15 June, 95 days later.

Last spring frost	12 March
Top 7 cm of soil at 18 °C	15 June, 95 days after the last frost
First autumn frost	5 December, 173 days after the start
Days in the bed to the first harvest (card)	36
First harvest, if planted in this window	21 July – 24 October
Days left for picking	137
Daylight	15:42 on 25 May, 16:12 on 15 June
Watering outdoors when fruiting (card)	every 3 days; the driest month, July, has 10 rainy days

The same dates in Caen hold for Cucumber, Bell Pepper, Eggplant, Pumpkin and Watermelon.

Zucchini in Caen: care after planting

Planted on 15 June: in the first weeks water every 4 days.

Pests and diseases of zucchini to watch for:

Weather in Caen during the zucchini season

About 485 mm of rain falls in the season; July is the driest month (52 mm) and December the wettest (89 mm).

Month	Day, °C	Night, °C	Rain, mm	Rainy days	Daylight on the 15th
June	20.3	12.7	67	11	16:12
July	22.2	14.5	52	10	15:51
August	22.5	14.7	55	11	14:27
September	20.3	12.8	59	12	12:39
October	16.8	10.2	78	13	10:52
November	12	6.8	85	15	9:10
December	9.7	4.8	89	14	8:14

ERA5 2016–2025, Open-Meteo

Zucchini in nearby cities

Around Caen, Le Mans is 15 days earlier and Brighton 35 days later.

City	Distance	Date	Difference
Le Havre	48 km	11 June – 25 September	4 days earlier
Rouen	109 km	16 June – 4 September	1 day later
Le Mans	139 km	31 May – 7 September	15 days earlier
Rennes	154 km	1 June – 11 September	14 days earlier
Brighton	183 km	20 July – 14 September	35 days later
Portsmouth	188 km	16 June – 14 September	1 day later

Where to buy zucchini plants and seeds near Caen

Buy plants ready to set out from 15 June to 18 September (from 25 May to 18 September for an unheated greenhouse); seed for raising your own is sown from 4 May to 28 August. Within 15 km of Caen OpenStreetMap lists 14 garden centres, 1 farm-supply shop, 7 plant nurseries, 20 markets and 22 farm shops (collected 27 October 2026).

Marché du mercredi — market
Mercredi Matin · 2 km
Marché de la Rue de Bayeux — market
Tue 07:30–13:30 · 2 km
Marché du Chemin-Vert — market
Thu 08:00–13:30 · 3 km
Marché de la Grace-de-Dieu — market
Tue 08:00–13:30 · 3 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.

Questions