When to plant cucumbers in Plzeň: 18 June – 21 August

In Plzeň, cucumber: sow for seedlings from 30 April to 24 July; plant into a greenhouse from 28 May to 21 August; plant out into open ground from 18 June to 21 August. For plants and seeds, the places nearby include Zeten Blovice (farm supply, 1 km) and KAMÍR a Co spol. s r.o. (farm supply, 7 km); addresses and opening hours are below.

Cucumber in Plzeň: soil, season and weather

In Plzeň the soil, not frost, sets the date: the last frost is over around 27 April, but the top 7 cm of soil reaches 18 °C — the minimum on the cucumber card — only around 18 June, 52 days later.

Last spring frost	27 April
Top 7 cm of soil at 18 °C	18 June, 52 days after the last frost
Into an unheated greenhouse	28 May – 21 August; May outside: 7.8 °C at night, 17.8 °C by day; card 18–25 °C
First autumn frost	5 November, 140 days after the start
Days in the bed to the first harvest (card)	34
First harvest, if planted in this window	22 July – 24 September
Days left for picking	106
Daylight	15:37 on 21 May, 16:19 on 18 June
Watering outdoors when fruiting (card)	every 2 days; the driest month, November, has 10 rainy days

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

Cucumber in Plzeň: care after planting

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

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

25 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 Plzeň during the cucumber season

No month of the season averages above the cucumber card's 18–35 °C by day; the warmest, July, averages 24.1 °C. Months that stay below 18 °C even by day on average: October (14.1 °C) and November (7 °C). Nights average below 18 °C in every month of the season, from 1 °C to 13.7 °C.

Month	Day, °C	Night, °C	Rain, mm	Rainy days	Daylight on the 15th
June	23.2	12.8	74	11	16:18
July	24.1	13.7	69	14	15:56
August	24.1	13.7	88	12	14:30
September	19.6	10.1	64	9	12:40
October	14.1	6	58	13	10:50
November	7	1	49	10	9:06

ERA5 2016–2025, Open-Meteo

Cucumber in nearby cities

Around Plzeň, Prague is 15 days earlier and Ústí nad Labem 4 days later.

City	Distance	Date	Difference
Prague	84 km	3 June – 24 August	15 days earlier
Ústí nad Labem	111 km	22 June – 28 August	4 days later
České Budějovice	117 km	18 June – 22 August	same day
Regensburg	124 km	14 June – 23 August	4 days earlier
Dresden	147 km	5 June – 3 September	13 days earlier
Liberec	165 km	22 June – 17 August	4 days later

Where to buy cucumber plants and seeds near Plzeň

Buy plants ready to set out from 18 June to 21 August (from 28 May to 21 August for an unheated greenhouse); seed for raising your own is sown from 30 April to 24 July. Within 15 km of Plzeň OpenStreetMap lists 5 garden centres, 2 farm-supply shops, 2 plant nurseries, 5 markets and 7 farm shops (collected 28 October 2026).

KAMÍR a Co spol. s r.o. — farm supply
Drážní 1008, 33011 Třemošná · Mon–Fri 08:00–12:00 12:30–17:00 · 7 km
Zeten Blovice — farm supply
Mon 08:00–17:30; Tue–Fri 08:00–16:30 · 1 km · zeten.cz
Česká farmářka — market
Mon–Sat 08:30–17:00 · 10 km · ceska-farmarka.cz
Chodské tržiště — market
Sat, Sun 06:00–12:00 · 2 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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