When to plant watermelons in Toruń: 3 June – 3 August

In Toruń, watermelon: sow for seedlings from 15 April to 6 July; plant into a greenhouse from 13 May to 3 August; plant out into open ground from 3 June to 3 August.

Watermelon in Toruń: soil, season and weather

In Toruń the soil, not frost, sets the date: the last frost is over around 26 April, but the top 7 cm of soil reaches 18 °C — the minimum on the watermelon card — only around 3 June, 38 days later.

Last spring frost	26 April
Top 7 cm of soil at 18 °C	3 June, 38 days after the last frost
Into an unheated greenhouse	13 May – 3 August; May outside: 8.3 °C at night, 18.9 °C by day; card 18–35 °C
First autumn frost	12 November, 162 days after the start
Days in the bed to the first harvest (card)	59
First harvest, if planted in this window	1 August – 1 October
Days left for picking	103
Daylight	15:17 on 6 May, 16:38 on 3 June
Watering outdoors when fruiting (card)	every 5 days; the driest month, November, has 9 rainy days

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

Watermelon in Toruń: 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 Toruń during the watermelon season

No month of the season averages above the watermelon card's 18–35 °C by day; the warmest, August, averages 24.7 °C. Months that stay below 18 °C even by day on average: October (14 °C) and November (7.3 °C). Nights average below 18 °C in every month of the season, from 2.3 °C to 14.6 °C.

Month	Day, °C	Night, °C	Rain, mm	Rainy days	Daylight on the 15th
June	24	13.3	68	11	16:54
July	24.3	14.4	89	13	16:28
August	24.7	14.6	61	9	14:49
September	20.4	11.2	55	8	12:45
October	14	6.9	60	12	10:41
November	7.3	2.3	39	9	8:43

ERA5 2016–2025, Open-Meteo

Watermelon in nearby cities

All the nearest cities on our list plant watermelon later than Toruń; the closest date is in Bydgoszcz, 3 days later.

City	Distance	Date	Difference
Bydgoszcz	41 km	6 June – 3 August	3 days later
Poznań	131 km	6 June – 7 August	3 days later
Gdańsk	149 km	15 June – 10 August	12 days later
Łódź	151 km	6 June – 26 July	3 days later
Olsztyn	151 km	9 June – 7 August	6 days later
Gdynia	168 km	7 June – 10 August	4 days later

Where to buy watermelon plants and seeds near Toruń

Buy plants ready to set out from 3 June to 3 August (from 13 May to 3 August for an unheated greenhouse); seed for raising your own is sown from 15 April to 6 July. Within 15 km of Toruń OpenStreetMap lists 14 garden centres, 1 farm-supply shop, 1 plant nursery, 6 markets and 15 farm shops (collected 28 October 2026).

Targowisko — market
2 km
Witaminka — farm shop
2 km
Owocowe Love — farm shop
2 km
Zdrowo Zakręceni — farm shop
2 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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