When to plant watermelons in Rzeszów: 7 June – 6 August

In Rzeszów, watermelon: sow for seedlings from 19 April to 9 July; plant into a greenhouse from 17 May to 6 August; plant out into open ground from 7 June to 6 August. For plants and seeds, the places nearby include Sklep ogrodniczy "Eden" (garden centre, 2 km) and Zielony Klomb (garden centre, 3 km); addresses and opening hours are below.

Watermelon in Rzeszów: soil, season and weather

In Rzeszów the soil, not frost, sets the date: the last frost is over around 13 April, but the top 7 cm of soil reaches 18 °C — the minimum on the watermelon card — only around 7 June, 55 days later.

Last spring frost	13 April
Top 7 cm of soil at 18 °C	7 June, 55 days after the last frost
Into an unheated greenhouse	17 May – 6 August; May outside: 8.6 °C at night, 18.6 °C by day; card 18–35 °C
First autumn frost	15 November, 161 days after the start
Days in the bed to the first harvest (card)	59
First harvest, if planted in this window	5 August – 4 October
Days left for picking	102
Daylight	15:09 on 10 May, 16:13 on 7 June
Watering outdoors when fruiting (card)	every 5 days; the driest month, November, has 12 rainy days

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

Watermelon in Rzeszów: care after planting

Planted on 7 June: in the first weeks water every 5 days.

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

7 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 Rzeszów during the watermelon season

No month of the season averages above the watermelon card's 18–35 °C by day; the warmest, August, averages 24.9 °C. Months that stay below 18 °C even by day on average: October (14.2 °C) and November (7.7 °C). Nights average below 18 °C in every month of the season, from 2.2 °C to 15.2 °C.

Month	Day, °C	Night, °C	Rain, mm	Rainy days	Daylight on the 15th
June	23.9	14	79	13	16:21
July	24.8	15.2	97	16	15:58
August	24.9	15	77	10	14:31
September	20	11.2	84	11	12:41
October	14.2	7	71	11	10:49
November	7.7	2.2	58	12	9:04

ERA5 2016–2025, Open-Meteo

Watermelon in nearby cities

Around Rzeszów, Uzhhorod is 11 days earlier and Drohobych 5 days later.

City	Distance	Date	Difference
Drohobych	133 km	12 June – 12 July	5 days later
Kielce	134 km	7 June – 26 July	same day
Lublin	140 km	7 June – 1 August	same day
Lviv	147 km	7 June – 3 August	same day
Kraków	147 km	6 June – 23 July	1 day earlier
Uzhhorod	159 km	27 May – 22 July	11 days earlier

Where to buy watermelon plants and seeds near Rzeszów

Buy plants ready to set out from 7 June to 6 August (from 17 May to 6 August for an unheated greenhouse); seed for raising your own is sown from 19 April to 9 July. Within 15 km of Rzeszów OpenStreetMap lists 14 garden centres, 4 plant nurseries, 5 markets and 1 farm shop (collected 28 October 2026).

Zielony Klomb — garden centre
Emilii Plater 8, 35-079 Rzeszów · 3 km · klomb.rzeszow.pl
Sklep ogrodniczo-przemysłowy "Ogrodnik" — garden centre
3 Maja 14, 36-060 Głogów Małopolski · Mon–Fri 08:00–17:00; Sat 08:00–14:00 · 13 km
Ogrodnik — garden centre
Kraczkowa 817, 37-124 · 12 km · ogrodnik7.com
Sklep ogrodniczy "Eden" — garden centre
Pułkownika Kazimierza Iranka-Osmeckiego 2, 35-507 Rzeszów · 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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