When to plant watermelons in Zielona Góra: 1 June – 4 August

In Zielona Góra, watermelon: sow for seedlings from 13 April to 7 July; plant into a greenhouse from 11 May to 4 August; plant out into open ground from 1 June to 4 August. For plants and seeds, the places nearby include Flora (garden centre, 1 km) and Sunplus (garden centre, 2 km); addresses and opening hours are below.

Watermelon in Zielona Góra: soil, season and weather

In Zielona Góra the soil, not frost, sets the date: the last frost is over around 16 April, but the top 7 cm of soil reaches 18 °C — the minimum on the watermelon card — only around 1 June, 46 days later.

Last spring frost	16 April
Top 7 cm of soil at 18 °C	1 June, 46 days after the last frost
Into an unheated greenhouse	11 May – 4 August; May outside: 8.8 °C at night, 19.5 °C by day; card 18–35 °C
First autumn frost	13 November, 165 days after the start
Days in the bed to the first harvest (card)	59
First harvest, if planted in this window	30 July – 2 October
Days left for picking	106
Daylight	15:02 on 4 May, 16:23 on 1 June
Watering outdoors when fruiting (card)	every 5 days; the driest month, November, has 9 rainy days

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

Watermelon in Zielona Góra: care after planting

Planted on 1 June: in the first weeks water every 5 days.

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

1 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 Zielona Góra during the watermelon season

No month of the season averages above the watermelon 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 (14.8 °C) and November (8.1 °C). Nights average below 18 °C in every month of the season, from 2.6 °C to 15 °C.

Month	Day, °C	Night, °C	Rain, mm	Rainy days	Daylight on the 15th
June	24.9	13.9	61	10	16:41
July	24.8	14.8	71	11	16:16
August	25	15	68	10	14:42
September	20.9	11.4	51	8	12:43
October	14.8	7.5	58	12	10:44
November	8.1	2.6	41	9	8:51

ERA5 2016–2025, Open-Meteo

Watermelon in nearby cities

Around Zielona Góra, Berlin is 1 day earlier and Liberec 21 days later.

City	Distance	Date	Difference
Poznań	110 km	6 June – 7 August	5 days later
Liberec	134 km	22 June – 23 July	21 days later
Wrocław	140 km	5 June – 2 August	4 days later
Berlin	157 km	31 May – 10 August	1 day earlier
Dresden	157 km	5 June – 9 August	4 days later
Potsdam	175 km	3 June – 12 August	2 days later

Where to buy watermelon plants and seeds near Zielona Góra

Buy plants ready to set out from 1 June to 4 August (from 11 May to 4 August for an unheated greenhouse); seed for raising your own is sown from 13 April to 7 July. Within 15 km of Zielona Góra OpenStreetMap lists 9 garden centres, 3 plant nurseries and 1 farm shop (collected 28 October 2026).

Szkółka leśna — plant nursery
4 km
Jajka — farm shop
2 km
Flora — garden centre
Fabryczna 6, 65-410 Zielona Góra · 1 km
Sunplus — garden centre
Generała Józefa Bema 39, Zielona Góra · 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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