When to plant pumpkins in Mannheim: 1 June – 26 July

In Mannheim, pumpkin: sow for seedlings from 30 March to 14 June; plant into a greenhouse from 11 May to 26 July; plant out into open ground from 1 June to 26 July.

Pumpkin in Mannheim: soil, season and weather

In Mannheim the soil, not frost, sets the date: the last frost is over around 14 April, but the top 7 cm of soil reaches 18 °C — the minimum on the pumpkin card — only around 1 June, 48 days later.

Last spring frost	14 April
Top 7 cm of soil at 18 °C	1 June, 48 days after the last frost
First autumn frost	20 November, 172 days after the start
Days in the bed to the first harvest (card)	75
First harvest, if planted in this window	15 August – 9 October
Days left for picking	97
Daylight	14:00 on 20 April, 15:59 on 1 June
Watering outdoors when fruiting (card)	every 5 days; the driest month, August, has 11 rainy days

The same dates in Mannheim hold for Cucumber, Bell Pepper, Eggplant, Zucchini and Watermelon.

Pumpkin in Mannheim: care after planting

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

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

22 June — feed: nitrogen

Pests and diseases of pumpkin 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 Mannheim during the pumpkin season

About 425 mm of rain falls in the season; August is the driest month (63 mm) and October the wettest (84 mm).

Month	Day, °C	Night, °C	Rain, mm	Rainy days	Daylight on the 15th
June	25.3	14.7	69	11	16:15
July	26.2	15.8	67	10	15:53
August	26.2	16	63	11	14:28
September	21.8	12.2	69	10	12:40
October	16.1	8.4	84	13	10:51
November	9.3	3.6	73	14	9:08

ERA5 2016–2025, Open-Meteo

Pumpkin in nearby cities

Around Mannheim, Karlsruhe is 2 days earlier and Stuttgart 4 days later.

City	Distance	Date	Difference
Karlsruhe	54 km	30 May – 25 July	2 days earlier
Wiesbaden	68 km	30 May – 29 July	2 days earlier
Frankfurt	71 km	4 June – 23 July	3 days later
Stuttgart	94 km	5 June – 14 July	4 days later
Saarbrücken	111 km	3 June – 24 July	2 days later
Strasbourg	115 km	1 June – 26 July	same day

Where to buy pumpkin plants and seeds near Mannheim

Buy plants ready to set out from 1 June to 26 July (from 11 May to 26 July for an unheated greenhouse); seed for raising your own is sown from 30 March to 14 June. Within 15 km of Mannheim OpenStreetMap lists 30 garden centres, 3 farm-supply shops, 17 plant nurseries, 24 markets and 50 farm shops (collected 28 October 2026).

Stadtteilmarkt Lindenhof — market
Meeräckerplatz, 68163 Mannheim · Wed, Sat 07:00–13:30 · 2 km · ep-ma.de
Marktplatz Neckarau — market
Fri 07:00–13:30 · 4 km · ep-ma.de
Stadtteilmarkt Niederfeld — market
Sat 08:00–14:00 · 4 km · ep-ma.de
Stadtteilmarkt Feudenheim — market
Fri 07:00–13:30 · 5 km · ep-ma.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.

Questions