When to plant cucumbers in Hradec Králové: 7 June – 27 August

In Hradec Králové, cucumber: sow for seedlings from 19 April to 30 July; plant into a greenhouse from 17 May to 27 August; plant out into open ground from 7 June to 27 August. For plants and seeds, the places nearby include Farma Čeperka Prodej Vajec (farm shop, 9 km); addresses and opening hours are below.

Cucumber in Hradec Králové: soil, season and weather

In Hradec Králové 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 – 27 August; May outside: 8.3 °C at night, 18.4 °C by day; card 18–25 °C
First autumn frost	11 November, 157 days after the start
Days in the bed to the first harvest (card)	34
First harvest, if planted in this window	11 July – 30 September
Days left for picking	123
Daylight	15:10 on 10 May, 16:15 on 7 June
Watering outdoors when fruiting (card)	every 2 days; the driest month, November, has 10 rainy days

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

Cucumber in Hradec Králové: 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 Hradec Králové during the cucumber season

No month of the season averages above the cucumber card's 18–35 °C by day; the warmest, August, averages 24.8 °C. Months that stay below 18 °C even by day on average: October (14.4 °C) and November (7.5 °C). Nights average below 18 °C in every month of the season, from 1.7 °C to 14.6 °C.

Month	Day, °C	Night, °C	Rain, mm	Rainy days	Daylight on the 15th
June	23.7	13.2	78	12	16:23
July	24.6	14.4	76	12	16:00
August	24.8	14.6	91	11	14:32
September	20.4	11	79	9	12:41
October	14.4	6.6	59	12	10:49
November	7.5	1.7	45	10	9:03

ERA5 2016–2025, Open-Meteo

Cucumber in nearby cities

Around Hradec Králové, Prague is 4 days earlier and Liberec 15 days later.

City	Distance	Date	Difference
Pardubice	19 km	5 June – 26 August	2 days earlier
Liberec	83 km	22 June – 17 August	15 days later
Prague	100 km	3 June – 24 August	4 days earlier
Olomouc	123 km	3 June – 22 August	4 days earlier
Brno	126 km	6 June – 22 August	1 day earlier
Wrocław	131 km	5 June – 27 August	2 days earlier

Where to buy cucumber plants and seeds near Hradec Králové

Buy plants ready to set out from 7 June to 27 August (from 17 May to 27 August for an unheated greenhouse); seed for raising your own is sown from 19 April to 30 July. Within 15 km of Hradec Králové OpenStreetMap lists 4 garden centres, 1 farm-supply shop and 4 farm shops (collected 28 October 2026).

Farma Čeperka Prodej Vajec — farm shop
Lesní 369 · Mon–Sun 06:00–18:00 · 9 km
ROD - VIK, s.r.o. — garden centre
8 km
Okrasné zahradnictví Havlíček — garden centre
15 km
Ovocné sady Vyčítal — farm shop · sells: apple, cherry
9 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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