When to plant eggplants in Duisburg: 3 June – 2 August

In Duisburg, eggplant: sow for seedlings from 14 March to 3 June; plant into a greenhouse from 13 May to 2 August; plant out into open ground from 3 June to 2 August. For plants and seeds, the places nearby include Gartencenter Schlößer (garden centre, 7 km) and Friedhofsgärtnerei Kiupel (garden centre, 7 km); addresses and opening hours are below.

Eggplant in Duisburg: soil, season and weather

In Duisburg the soil, not frost, sets the date: the last frost is over around 5 April, but the top 7 cm of soil reaches 18 °C — the minimum on the eggplant card — only around 3 June, 59 days later.

Last spring frost	5 April
Top 7 cm of soil at 18 °C	3 June, 59 days after the last frost
Into an unheated greenhouse	13 May – 2 August; May outside: 9.5 °C at night, 19.1 °C by day; card 21–29 °C
First autumn frost	22 November, 172 days after the start
Days in the bed to the first harvest (card)	70
First harvest, if planted in this window	12 August – 11 October
Days left for picking	102
Daylight	13:07 on 4 April, 16:21 on 3 June
Watering outdoors when fruiting (card)	every 3 days; the driest month, August, has 13 rainy days

The same dates in Duisburg hold for Cucumber, Bell Pepper, Zucchini, Pumpkin and Watermelon.

Eggplant in Duisburg: care after planting

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

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

3 June — feed: balanced (NPK)
1 July — feed: nitrogen

Pests and diseases of eggplant 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 Duisburg during the eggplant season

No month of the season averages above the eggplant card's 21–29 °C by day; the warmest, August, averages 24 °C. Months that stay below 21 °C even by day on average: September (20.5 °C), October (15.6 °C) and November (9.8 °C). Nights average below 21 °C in every month of the season, from 4.6 °C to 15 °C.

Month	Day, °C	Night, °C	Rain, mm	Rainy days	Daylight on the 15th
June	23.2	13.8	75	12	16:36
July	23.7	14.8	69	13	16:11
August	24	15	62	13	14:39
September	20.5	12.2	74	12	12:42
October	15.6	9.3	79	13	10:46
November	9.8	4.6	69	14	8:55

ERA5 2016–2025, Open-Meteo

Eggplant in nearby cities

4 of the nearest cities share Duisburg's date.

City	Distance	Date	Difference
Essen	18 km	3 June – 1 August	same day
Düsseldorf	22 km	3 June – 1 August	same day
Bochum	32 km	3 June – 31 July	same day
Dortmund	50 km	5 June – 27 July	2 days later
Cologne	56 km	3 June – 31 July	same day
Bonn	81 km	4 June – 30 July	1 day later

Where to buy eggplant plants and seeds near Duisburg

Buy plants ready to set out from 3 June to 2 August (from 13 May to 2 August for an unheated greenhouse); seed for raising your own is sown from 14 March to 3 June. Within 15 km of Duisburg OpenStreetMap lists 44 garden centres, 3 farm-supply shops, 5 plant nurseries, 35 markets and 27 farm shops (collected 28 October 2026).

Gärtnerei Schladitz — garden centre
Gartmannstraße 16, 47506 Neukirchen-Vluyn · Mon–Fri 09:00–13:00, 15:00–18:00; Sat 09:00–13:00 · 14 km
Gartencenter Schlößer — garden centre
Römerstraße 19, 47447 Moers · Mon–Fri 09:00–19:00; Sat 09:00–18:00; Sun 10:00–12:00 · 7 km
Friedhofsgärtnerei Kiupel — garden centre
Landwehr 238, 46045 Oberhausen · Mon–Fri 08:30–13:00, 14:00–18:00; Sat 08:00–14:00; Sun, public holidays 10:00–12:00 · 7 km
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

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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