When to plant zucchini in Katowice: 6 June – 30 August

In Katowice, zucchini: sow for seedlings from 25 April to 9 August; plant into a greenhouse from 16 May to 30 August; plant out into open ground from 6 June to 30 August.

Zucchini 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 18 °C — the minimum on the zucchini card — only around 6 June, 52 days later.

Last spring frost	15 April
Top 7 cm of soil at 18 °C	6 June, 52 days after the last frost
First autumn frost	16 November, 163 days after the start
Days in the bed to the first harvest (card)	36
First harvest, if planted in this window	12 July – 5 October
Days left for picking	127
Daylight	15:28 on 16 May, 16:14 on 6 June
Watering outdoors when fruiting (card)	every 3 days; the driest month, November, has 10 rainy days

The same dates in Katowice hold for Cucumber, Bell Pepper, Eggplant, Pumpkin and Watermelon.

Zucchini in Katowice: care after planting

Planted on 6 June: in the first weeks water every 4 days.

Pests and diseases of zucchini to watch for:

Weather in Katowice during the zucchini season

About 462 mm of rain falls in the season; November is the driest month (54 mm) and July the wettest (98 mm).

Month	Day, °C	Night, °C	Rain, mm	Rainy days	Daylight on the 15th
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

Zucchini in nearby cities

Around Katowice, Opole is 4 days earlier and Ostrava 2 days later.

City	Distance	Date	Difference
Częstochowa	62 km	5 June – 24 August	1 day earlier
Kraków	69 km	6 June – 15 August	same day
Ostrava	73 km	8 June – 23 August	2 days later
Opole	90 km	2 June – 1 September	4 days earlier
Kielce	132 km	7 June – 18 August	1 day later
Olomouc	147 km	3 June – 20 August	3 days earlier

Where to buy zucchini plants and seeds near Katowice

Buy plants ready to set out from 6 June to 30 August (from 16 May to 30 August for an unheated greenhouse); seed for raising your own is sown from 25 April to 9 August. 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).

Targowisko — market
Agnieszki 15, 40-110 Katowice · Mon–Sat 07:00–16:00; public holidays closed · 2 km · ztm24.pl
Targowisko Miejskie — market
Katowicka, Katowice · Mon–Sat 06:00–18:00; public holidays closed · 1 km · ztm24.pl
BioBazar Huta Baildon — market
Johna Baildona 66, 40-115 Katowice · Wed 07:00–17:00; Sat 07:00–14:00 · 2 km · katowice.biobazar.org.pl
Zielony Bazar — market
Kolońska 1, 40-002 Katowice · Mon–Fri 04:00–19:00; Sat 04:00–14:00; Sun, public holidays closed · 3 km · zielonybazar.com.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.

Questions