When to plant tomatoes in Katowice: 18 May – 27 July

In Katowice, tomato: sow for seedlings from 6 March to 5 June; plant into a greenhouse from 27 April to 27 July; plant out into open ground from 18 May to 27 July. For plants and seeds, the places nearby include Ogród OBI (garden centre, 4 km) and Vigo (garden centre, 5 km); addresses and opening hours are below.

Tomato in Katowice: soil, season and weather

In Katowice 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 18 May, 33 days later.

Last spring frost	15 April
Top 7 cm of soil at 15 °C	18 May, 33 days after the last frost
Into an unheated greenhouse	27 April – 27 July; April outside: 4.1 °C at night, 14.1 °C by day; card 16–27 °C
First autumn frost	16 November, 182 days after the start
Days in the bed to the first harvest (card)	70
First harvest, if planted in this window	27 July – 5 October
Days left for picking	112
Daylight	12:34 on 27 March, 15:34 on 18 May
Watering outdoors when fruiting (card)	every 3 days; the driest month, November, has 10 rainy days

Tomato in Katowice: care after planting

Planted on 18 May: in the first weeks water every 4 days.

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

18 May — feed: balanced (NPK)
15 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 Katowice during the tomato season

No month of the season averages above the tomato card's 16–27 °C by day; the warmest, August, averages 24.6 °C. Months that stay below 16 °C even by day on average: October (14.4 °C) and November (7.8 °C). Nights average below 16 °C in every month of the season, from 2 °C to 15 °C.

Month	Day, °C	Night, °C	Rain, mm	Rainy days	Daylight on the 15th
May	18.3	8.5	69	12	15:25
June	23.7	13.6	73	12	16:23
July	24.4	14.8	98	14	16:00
August	24.6	15	89	11	14:32
September	20	11.1	85	12	12:41
October	14.4	6.5	63	12	10:49
November	7.8	2	54	10	9:03

ERA5 2016–2025, Open-Meteo

Tomato in nearby cities

Around Katowice, Opole is 7 days earlier and Ostrava 7 days later.

City	Distance	Date	Difference
Częstochowa	62 km	17 May – 21 July	1 day earlier
Kraków	69 km	18 May – 12 July	same day
Ostrava	73 km	25 May – 20 July	7 days later
Opole	90 km	11 May – 29 July	7 days earlier
Kielce	132 km	22 May – 15 July	4 days later
Olomouc	147 km	17 May – 17 July	1 day earlier

Where to buy tomato plants and seeds near Katowice

Buy plants ready to set out from 18 May to 27 July (from 27 April to 27 July for an unheated greenhouse); seed for raising your own is sown from 6 March to 5 June. Within 15 km of Katowice OpenStreetMap lists 25 garden centres, 1 farm-supply shop, 7 plant nurseries, 33 markets and 3 farm shops (collected 28 October 2026).

Centrum Ogrodnicze Tomka — garden centre
Jana Długosza 86, 41-219 Sosnowiec · Mon–Fri 09:00–18:00; Sat 09:00–17:00; Sun 09:00–15:00 · 13 km · tomka.pl
Centrum Techniki Ogrodniczej i Leśnej Aster — garden centre
Obrońców Westerplatte 20, 41-710 Ruda Śląska · Mon–Fri 09:00–17:00; Sat 09:00–13:00 · 11 km · aster.rsl.pl
Ogród OBI — garden centre
Rolna 4, 40-555 Katowice · Mon–Sat 07:30–21:00, Sun 09:00–19:00 · 4 km
Vigo — garden centre
Generała Zygmunta Waltera Jankego 52 · Mon–Fri 08:00–17:00; Sat 08:00–13:00 · 5 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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