When to plant zucchini in Strasbourg: 1 June – 3 September

In Strasbourg, zucchini: sow for seedlings from 20 April to 13 August; plant into a greenhouse from 11 May to 3 September; plant out into open ground from 1 June to 3 September.

Zucchini in Strasbourg: soil, season and weather

In Strasbourg the soil, not frost, sets the date: the last frost is over around 6 April, but the top 7 cm of soil reaches 18 °C — the minimum on the zucchini card — only around 1 June, 56 days later.

Last spring frost	6 April
Top 7 cm of soil at 18 °C	1 June, 56 days after the last frost
First autumn frost	20 November, 172 days after the start
Days in the bed to the first harvest (card)	36
First harvest, if planted in this window	7 July – 9 October
Days left for picking	136
Daylight	15:02 on 11 May, 15:50 on 1 June
Watering outdoors when fruiting (card)	every 3 days; the driest month, September, has 10 rainy days

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

Zucchini in Strasbourg: care after planting

Planted on 1 June: in the first weeks water every 4 days.

Pests and diseases of zucchini to watch for:

Weather in Strasbourg during the zucchini season

About 442 mm of rain falls in the season; September is the driest month (65 mm) and June the wettest (81 mm).

Month	Day, °C	Night, °C	Rain, mm	Rainy days	Daylight on the 15th
June	25.2	14.9	81	13	16:06
July	26.2	16	78	11	15:45
August	26.2	16	66	11	14:24
September	22.1	12.5	65	10	12:39
October	16.7	8.6	77	13	10:53
November	9.7	3.7	75	13	9:14

ERA5 2016–2025, Open-Meteo

Zucchini in nearby cities

Around Strasbourg, Karlsruhe is 2 days earlier and Colmar 15 days later.

City	Distance	Date	Difference
Colmar	62 km	16 June – 31 August	15 days later
Freiburg im Breisgau	65 km	4 June – 30 August	3 days later
Karlsruhe	68 km	30 May – 2 September	2 days earlier
Saarbrücken	93 km	3 June – 1 September	2 days later
Mulhouse	96 km	1 June – 31 August	same day
Stuttgart	108 km	5 June – 22 August	4 days later

Where to buy zucchini plants and seeds near Strasbourg

Buy plants ready to set out from 1 June to 3 September (from 11 May to 3 September for an unheated greenhouse); seed for raising your own is sown from 20 April to 13 August. Within 15 km of Strasbourg OpenStreetMap lists 15 garden centres, 13 markets and 31 farm shops (collected 20 October 2026).

Marché place de Bordeaux — market
Tue 07:00–13:00; Sat 07:00–13:00 · 3 km
AMAP du jardin d'Agnès et de la ferme Lindgrube — market
Thu 18:00–19:30 · 4 km
Wochenmarkt Kehl — market
Tue, Fri 08:00–13:00 · 5 km
marché hebdomadaire — market
Sat 08:00–12:00 · 11 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