When to plant zucchini in Düsseldorf: 3 June – 4 September

In Düsseldorf, zucchini: sow for seedlings from 22 April to 14 August; plant into a greenhouse from 13 May to 4 September; plant out into open ground from 3 June to 4 September. For plants and seeds, the places nearby include Schlüters Hofverkauf (farm supply, 12 km); addresses and opening hours are below.

Zucchini in Düsseldorf: soil, season and weather

In Düsseldorf the soil, not frost, sets the date: the last frost is over around 4 April, but the top 7 cm of soil reaches 18 °C — the minimum on the zucchini card — only around 3 June, 60 days later.

Last spring frost	4 April
Top 7 cm of soil at 18 °C	3 June, 60 days after the last frost
First autumn frost	21 November, 171 days after the start
Days in the bed to the first harvest (card)	36
First harvest, if planted in this window	9 July – 10 October
Days left for picking	135
Daylight	15:27 on 13 May, 16:19 on 3 June
Watering outdoors when fruiting (card)	every 3 days; the driest month, June, has 12 rainy days

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

Zucchini in Düsseldorf: care after planting

Planted on 3 June: in the first weeks water every 4 days.

Pests and diseases of zucchini to watch for:

Weather in Düsseldorf during the zucchini season

About 471 mm of rain falls in the season; June is the driest month (74 mm) and October the wettest (84 mm).

Month	Day, °C	Night, °C	Rain, mm	Rainy days	Daylight on the 15th
June	23.4	13.9	74	12	16:33
July	24.1	14.8	83	14	16:09
August	24.4	15.2	74	13	14:38
September	20.7	12.2	78	11	12:42
October	15.7	9.2	84	14	10:46
November	9.9	4.5	78	15	8:56

ERA5 2016–2025, Open-Meteo

Zucchini in nearby cities

4 of the nearest cities share Düsseldorf's date.

City	Distance	Date	Difference
Duisburg	22 km	3 June – 5 September	same day
Essen	30 km	3 June – 4 September	same day
Cologne	35 km	3 June – 3 September	same day
Bochum	41 km	3 June – 3 September	same day
Dortmund	57 km	5 June – 30 August	2 days later
Bonn	60 km	4 June – 2 September	1 day later

Where to buy zucchini plants and seeds near Düsseldorf

Buy plants ready to set out from 3 June to 4 September (from 13 May to 4 September for an unheated greenhouse); seed for raising your own is sown from 22 April to 14 August. Within 15 km of Düsseldorf OpenStreetMap lists 39 garden centres, 1 farm-supply shop, 8 plant nurseries, 46 markets and 64 farm shops (collected 28 October 2026).

Schlüters Hofverkauf — farm supply
Thunesweg 81, 40885 · Wed–Fri 09:00–18:00; Mon 10:00–17:00; Sat 09:00–14:00 · 12 km · schlueters-hofverkauf.de
Bauernmarkt Pempelfort — market
Kolpingplatz 1a, 40477 Düsseldorf · Wed 09:00–13:00; Sat 08:00–13:30 · 1 km · bauernmarkt.netzwerkagrarbuero.de
Kim Phi Asia Food GmbH — market
Höherweg 313, 40231 · Mon–Fri 09:00–18:00; Sat 10:00–16:00 · 4 km · kimphiasiafood.de
Wochenmarkt — market
Gertrudisplatz 1, 40229 Düsseldorf · Tue–Fri 08:00–18:00; Sat 08:00–14:00 · 5 km · duesseldorf.de

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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