When to plant cucumbers in Stuttgart: 5 June – 24 August

In Stuttgart, cucumber: sow for seedlings from 17 April to 27 July; plant into a greenhouse from 15 May to 24 August; plant out into open ground from 5 June to 24 August. For plants and seeds, the places nearby include Gärtnerei Gehrung (garden centre, 6 km) and Gärtnerei Staehle (garden centre, 6 km); addresses and opening hours are below.

Cucumber in Stuttgart: soil, season and weather

In Stuttgart the soil, not frost, sets the date: the last frost is over around 19 April, but the top 7 cm of soil reaches 18 °C — the minimum on the cucumber card — only around 5 June, 47 days later.

Last spring frost	19 April
Top 7 cm of soil at 18 °C	5 June, 47 days after the last frost
Into an unheated greenhouse	15 May – 24 August; May outside: 8.2 °C at night, 18.7 °C by day; card 18–25 °C
First autumn frost	8 November, 156 days after the start
Days in the bed to the first harvest (card)	34
First harvest, if planted in this window	9 July – 27 September
Days left for picking	122
Daylight	14:55 on 8 May, 15:59 on 5 June
Watering outdoors when fruiting (card)	every 2 days; the driest month, October, has 12 rainy days

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

Cucumber in Stuttgart: 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 Stuttgart during the cucumber season

No month of the season averages above the cucumber card's 18–35 °C by day; the warmest, August, averages 25 °C. Months that stay below 18 °C even by day on average: October (16 °C) and November (9.1 °C). Nights average below 18 °C in every month of the season, from 2 °C to 14.4 °C.

Month	Day, °C	Night, °C	Rain, mm	Rainy days	Daylight on the 15th
June	23.9	13.1	88	14	16:08
July	24.9	14.2	78	13	15:47
August	25	14.4	84	12	14:25
September	20.8	10.7	70	11	12:39
October	16	7.1	66	12	10:53
November	9.1	2	66	13	9:13

ERA5 2016–2025, Open-Meteo

Cucumber in nearby cities

Around Stuttgart, Karlsruhe is 6 days earlier and St. Gallen 10 days later.

City	Distance	Date	Difference
Karlsruhe	62 km	30 May – 4 September	6 days earlier
Mannheim	94 km	1 June – 5 September	4 days earlier
Strasbourg	108 km	1 June – 5 September	4 days earlier
Freiburg im Breisgau	132 km	4 June – 1 September	1 day earlier
Augsburg	135 km	13 June – 25 August	8 days later
St. Gallen	152 km	15 June – 3 September	10 days later

Where to buy cucumber plants and seeds near Stuttgart

Buy plants ready to set out from 5 June to 24 August (from 15 May to 24 August for an unheated greenhouse); seed for raising your own is sown from 17 April to 27 July. Within 15 km of Stuttgart OpenStreetMap lists 34 garden centres, 2 farm-supply shops, 10 plant nurseries, 28 markets and 99 farm shops (collected 28 October 2026).

Gärtnerei Gehrung — garden centre
Nellinger Straße 30, 70619 Stuttgart · Tue, Thu, Fri 09:00–13:00, 14:30–18:00; Sat 09:00–13:00; Mon, Wed closed · 6 km · gaertnerei-gehrung.de
Gärtnerei Staehle — garden centre
Ludwigsburger Straße 211, 70435 Stuttgart · Mon–Fri 09:00–18:00; Sat 09:00–14:00 · 6 km · gaertnerei-staehle.de
Pflanzen-Kölle Gartencenter — garden centre
Stuttgarter Straße 59, 70734 Fellbach · Mon–Fri 08:00–20:00; Sat 08:00–20:00; Sun 11:00–14:00 · 7 km · pflanzen-koelle.de
Pflanzen-Kölle — garden centre
Schwieberdinger Straße 238, 70435 Stuttgart · Mon–Fri 09:00–20:00; Sat 09:00–18:00 · 8 km · pflanzen-koelle.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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