When to plant watermelons in Saarbrücken: 3 June – 9 August

In Saarbrücken, watermelon: sow for seedlings from 15 April to 12 July; plant into a greenhouse from 13 May to 9 August; plant out into open ground from 3 June to 9 August. For plants and seeds, the places nearby include Hofladen Maurer (farm shop, 5 km) and Erdbeerland (farm shop, 6 km); addresses and opening hours are below.

Watermelon in Saarbrücken: soil, season and weather

In Saarbrücken 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 watermelon card — only around 3 June, 50 days later.

Last spring frost	14 April
Top 7 cm of soil at 18 °C	3 June, 50 days after the last frost
Into an unheated greenhouse	13 May – 9 August; May outside: 8.9 °C at night, 18.7 °C by day; card 18–35 °C
First autumn frost	18 November, 168 days after the start
Days in the bed to the first harvest (card)	59
First harvest, if planted in this window	1 August – 7 October
Days left for picking	109
Daylight	14:52 on 6 May, 16:00 on 3 June
Watering outdoors when fruiting (card)	every 5 days; the driest month, August, has 12 rainy days

The same dates in Saarbrücken hold for Cucumber, Bell Pepper, Eggplant, Zucchini and Pumpkin.

Watermelon in Saarbrücken: care after planting

Planted on 3 June: in the first weeks water every 5 days.

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

3 June — feed: balanced (NPK)

Pests and diseases of watermelon 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 Saarbrücken during the watermelon season

No month of the season averages above the watermelon card's 18–35 °C by day; the warmest, August, averages 24.8 °C. Months that stay below 18 °C even by day on average: October (15.4 °C) and November (8.9 °C). Nights average below 18 °C in every month of the season, from 3.4 °C to 14.9 °C.

Month	Day, °C	Night, °C	Rain, mm	Rainy days	Daylight on the 15th
June	23.5	13.5	78	12	16:13
July	24.6	14.5	66	11	15:51
August	24.8	14.9	65	12	14:27
September	20.6	11.3	73	10	12:40
October	15.4	8	85	13	10:52
November	8.9	3.4	85	14	9:10

ERA5 2016–2025, Open-Meteo

Watermelon in nearby cities

Around Saarbrücken, Strasbourg is 2 days earlier and Esch-sur-Alzette 12 days later.

City	Distance	Date	Difference
Metz	60 km	4 June – 8 August	1 day later
Luxembourg	75 km	7 June – 9 August	4 days later
Esch-sur-Alzette	79 km	15 June – 9 August	12 days later
Nancy	86 km	3 June – 8 August	same day
Strasbourg	93 km	1 June – 11 August	2 days earlier
Ettelbruck	93 km	6 June – 6 August	3 days later

Where to buy watermelon plants and seeds near Saarbrücken

Buy plants ready to set out from 3 June to 9 August (from 13 May to 9 August for an unheated greenhouse); seed for raising your own is sown from 15 April to 12 July. Within 15 km of Saarbrücken OpenStreetMap lists 15 garden centres, 2 plant nurseries, 10 markets and 13 farm shops (collected 28 October 2026).

Hofladen Maurer — farm shop
Wed–Sat 09:00–13:00; public holidays, Mon–Tue, Sun closed · 5 km
Erdbeerland — farm shop
Mon–Fri 09:00–18:00; Sat 08:00–14:00; public holidays, Sun closed · 6 km
Götzenmühle — farm shop
Mon–Wed, Fri 14:30–18:00; Sat 09:00–12:00 · 11 km
Honig Wenzel — farm shop
Fri 14:00–18:00, Sat 08:30–12:30 · 14 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.

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