When to plant cucumbers in Bielefeld: 5 June – 3 September

In Bielefeld, cucumber: sow for seedlings from 17 April to 6 August; plant into a greenhouse from 15 May to 3 September; plant out into open ground from 5 June to 3 September. For plants and seeds, the places nearby include Die Schatztruhe (garden centre, 7 km) and Lünse Gartencenter (garden centre, 9 km); addresses and opening hours are below.

Cucumber in Bielefeld: soil, season and weather

In Bielefeld the soil, not frost, sets the date: the last frost is over around 20 April, but the top 7 cm of soil reaches 18 °C — the minimum on the cucumber card — only around 5 June, 46 days later.

Last spring frost	20 April
Top 7 cm of soil at 18 °C	5 June, 46 days after the last frost
Into an unheated greenhouse	15 May – 3 September; May outside: 8.4 °C at night, 18.6 °C by day; card 18–25 °C
First autumn frost	18 November, 166 days after the start
Days in the bed to the first harvest (card)	34
First harvest, if planted in this window	9 July – 7 October
Days left for picking	132
Daylight	15:17 on 8 May, 16:31 on 5 June
Watering outdoors when fruiting (card)	every 2 days; the driest month, September, has 11 rainy days

The same dates in Bielefeld hold for Bell Pepper, Eggplant, Zucchini, Pumpkin and Watermelon.

Cucumber in Bielefeld: care after planting

Planted on 5 June: in the first weeks water every 4 days.

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

12 June — feed: nitrogen

Pests and diseases of cucumber 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 Bielefeld during the cucumber season

No month of the season averages above the cucumber card's 18–35 °C by day; the warmest, August, averages 23.8 °C. Months that stay below 18 °C even by day on average: October (14.9 °C) and November (9 °C). Nights average below 18 °C in every month of the season, from 3.5 °C to 14.2 °C.

Month	Day, °C	Night, °C	Rain, mm	Rainy days	Daylight on the 15th
June	22.8	12.9	72	12	16:42
July	23.3	13.8	78	14	16:17
August	23.8	14.2	66	14	14:43
September	20	11.1	63	11	12:43
October	14.9	8.3	84	15	10:44
November	9	3.5	70	14	8:50

ERA5 2016–2025, Open-Meteo

Cucumber in nearby cities

Around Bielefeld, Münster is 4 days earlier and Bremen 6 days later.

City	Distance	Date	Difference
Münster	62 km	1 June – 6 September	4 days earlier
Hanover	91 km	7 June – 6 September	2 days later
Dortmund	92 km	5 June – 1 September	same day
Bochum	108 km	3 June – 5 September	2 days earlier
Bremen	119 km	11 June – 4 September	6 days later
Essen	122 km	3 June – 6 September	2 days earlier

Where to buy cucumber plants and seeds near Bielefeld

Buy plants ready to set out from 5 June to 3 September (from 15 May to 3 September for an unheated greenhouse); seed for raising your own is sown from 17 April to 6 August. Within 15 km of Bielefeld OpenStreetMap lists 23 garden centres, 1 farm-supply shop, 2 plant nurseries, 13 markets and 26 farm shops (collected 28 October 2026).

Die Schatztruhe — garden centre
Detmolder Straße 627, 33699 Bielefeld · Mon–Fri 09:00–18:30; Sat 10:00–16:00 · 7 km · sonnenpartner.de
ESCHEN - Tierfutter und Gartenbedarf — garden centre
Hellweg 105, 33758 Schloß Holte-Stukenbrock · Mon–Fri 09:00–13:00, 14:30–18:30; Sat 09:00–13:00; Sun, public holidays closed · 12 km · gartenbedarf-eschen.de
Baumschule Upmann — garden centre
Mönchsweg 3, 33803 Steinhagen · 11 km · baumschule-upmann.de
Lünse Gartencenter — garden centre
Elverdisser Straße 548, 32052 Herford · Mon–Sat 10:00–18:00; public holidays closed · 9 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