When to plant tomatoes in Opole: 11 May – 29 July

In Opole, tomato: sow for seedlings from 27 February to 7 June; plant into a greenhouse from 20 April to 29 July; plant out into open ground from 11 May to 29 July. For plants and seeds, the places nearby include Grene (farm supply, 3 km) and Bajek (garden centre, 6 km); addresses and opening hours are below.

Tomato in Opole: soil, season and weather

In Opole the soil, not frost, sets the date: the last frost is over around 15 April, but the top 7 cm of soil reaches 15 °C — the minimum on the tomato card — only around 11 May, 26 days later.

Last spring frost	15 April
Top 7 cm of soil at 15 °C	11 May, 26 days after the last frost
Into an unheated greenhouse	20 April – 29 July; April outside: 4.6 °C at night, 14.6 °C by day; card 16–27 °C
First autumn frost	18 November, 191 days after the start
Days in the bed to the first harvest (card)	70
First harvest, if planted in this window	20 July – 7 October
Days left for picking	121
Daylight	12:08 on 20 March, 15:17 on 11 May
Watering outdoors when fruiting (card)	every 3 days; the driest month, November, has 10 rainy days

Tomato in Opole: care after planting

Planted on 11 May: in the first weeks water every 4 days.

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

11 May — feed: balanced (NPK)
8 June — feed: nitrogen

Pests and diseases of tomato 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 Opole during the tomato season

No month of the season averages above the tomato card's 16–27 °C by day; the warmest, August, averages 25.1 °C. Months that stay below 16 °C even by day on average: October (14.8 °C) and November (8.2 °C). Nights average below 16 °C in every month of the season, from 2.5 °C to 15.3 °C.

Month	Day, °C	Night, °C	Rain, mm	Rainy days	Daylight on the 15th
May	19.1	8.9	65	11	15:29
June	24.5	14.1	75	11	16:27
July	24.9	15.1	97	13	16:04
August	25.1	15.3	83	12	14:35
September	20.7	11.6	66	11	12:41
October	14.8	7.2	67	13	10:48
November	8.2	2.5	55	10	9:00

ERA5 2016–2025, Open-Meteo

Tomato in nearby cities

All the nearest cities on our list plant tomato later than Opole; the closest date is in Wrocław, 1 day later.

City	Distance	Date	Difference
Wrocław	79 km	12 May – 22 July	1 day later
Częstochowa	85 km	17 May – 21 July	6 days later
Katowice	90 km	18 May – 27 July	7 days later
Ostrava	97 km	25 May – 20 July	14 days later
Olomouc	130 km	17 May – 17 July	6 days later
Hradec Králové	157 km	21 May – 22 July	10 days later

Where to buy tomato plants and seeds near Opole

Buy plants ready to set out from 11 May to 29 July (from 20 April to 29 July for an unheated greenhouse); seed for raising your own is sown from 27 February to 7 June. Within 15 km of Opole OpenStreetMap lists 4 garden centres, 2 farm-supply shops and 2 markets (collected 28 October 2026).

Szkółki Olszanowski - Drzewa, Krzewy, Byliny — garden centre
Szkolna 4, 46-022 Zawada · Mon–Fri 08:00–18:00; Sat 09:00–17:00 · 7 km · olszanowski.com.pl
Oaza-Palmy Sylwia Hennek — garden centre
Opolska 26, 46-061 Chrzowice · Mon–Fri 09:00–18:00 · 7 km · oaza-palmy.pl
Bajek — garden centre
Mon–Fri 08:00–18:00; Sat 08:00–14:00 · 6 km
Grene — farm supply
Budowlanych 50, 45-124 Opole · 3 km · grene.pl

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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