When to plant cucumbers in Kielce: 7 June – 20 August

In Kielce, cucumber: sow for seedlings from 19 April to 23 July; plant into a greenhouse from 17 May to 20 August; plant out into open ground from 7 June to 20 August. For plants and seeds, the places nearby include Jaja Na Stoku (farm shop, 3 km); addresses and opening hours are below.

Cucumber in Kielce: soil, season and weather

In Kielce the soil, not frost, sets the date: the last frost is over around 18 April, but the top 7 cm of soil reaches 18 °C — the minimum on the cucumber card — only around 7 June, 50 days later.

Last spring frost	18 April
Top 7 cm of soil at 18 °C	7 June, 50 days after the last frost
Into an unheated greenhouse	17 May – 20 August; May outside: 8.3 °C at night, 18.2 °C by day; card 18–25 °C
First autumn frost	4 November, 150 days after the start
Days in the bed to the first harvest (card)	34
First harvest, if planted in this window	11 July – 23 September
Days left for picking	116
Daylight	15:15 on 10 May, 16:21 on 7 June
Watering outdoors when fruiting (card)	every 2 days; the driest month, November, has 10 rainy days

The same dates in Kielce hold for Bell Pepper, Eggplant, Zucchini, Pumpkin and Watermelon.

Cucumber in Kielce: care after planting

Planted on 7 June: in the first weeks water every 4 days.

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

14 June — feed: nitrogen

Pests and diseases of cucumber 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 Kielce during the cucumber season

No month of the season averages above the cucumber card's 18–35 °C by day; the warmest, August, averages 24.7 °C. Months that stay below 18 °C even by day on average: October (13.8 °C) and November (7.1 °C). Nights average below 18 °C in every month of the season, from 1.4 °C to 14.8 °C.

Month	Day, °C	Night, °C	Rain, mm	Rainy days	Daylight on the 15th
June	23.7	13.5	65	11	16:30
July	24.5	14.8	79	14	16:06
August	24.7	14.7	74	10	14:36
September	19.7	10.9	69	11	12:42
October	13.8	5.9	63	11	10:47
November	7.1	1.4	46	10	8:59

ERA5 2016–2025, Open-Meteo

Cucumber in nearby cities

2 of the nearest cities share Kielce's date.

City	Distance	Date	Difference
Radom	69 km	7 June – 31 August	same day
Kraków	102 km	6 June – 17 August	1 day earlier
Częstochowa	106 km	5 June – 26 August	2 days earlier
Łódź	128 km	6 June – 20 August	1 day earlier
Katowice	132 km	6 June – 1 September	1 day earlier
Rzeszów	134 km	7 June – 31 August	same day

Where to buy cucumber plants and seeds near Kielce

Buy plants ready to set out from 7 June to 20 August (from 17 May to 20 August for an unheated greenhouse); seed for raising your own is sown from 19 April to 23 July. Within 15 km of Kielce OpenStreetMap lists 6 garden centres, 1 farm-supply shop, 6 markets and 3 farm shops (collected 28 October 2026).

Giełda Miedziana Góra — market
Wykień 68, 26-085 Ćmińsk · Sun 5:00–14:00; Mon–Sat closed · 12 km · salmar.pl
Mini Giełda Miedziana Góra — market
Sun 5:00–14:00; Mon–Sat closed · 12 km · salmar.pl
Bazary osiedle Świętokrzyskie — market
24/7 · 3 km
Jaja Na Stoku — farm shop · sells: eggs
Mon–Fri 09:00–18:00; Sat 08:00–14:00 · 3 km · jajanastoku.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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