When to plant cucumbers in Liberec: 22 June – 17 August

In Liberec, cucumber: sow for seedlings from 4 May to 20 July; plant into a greenhouse from 1 June to 17 August; plant out into open ground from 22 June to 17 August. For plants and seeds, the places nearby include HECHT (garden centre, 2 km) and Náš grunt (farm shop, 14 km); addresses and opening hours are below.

Cucumber in Liberec: soil, season and weather

In Liberec the soil, not frost, sets the date: the last frost is over around 25 April, but the top 7 cm of soil reaches 18 °C — the minimum on the cucumber card — only around 22 June, 58 days later.

Last spring frost	25 April
Top 7 cm of soil at 18 °C	22 June, 58 days after the last frost
Into an unheated greenhouse	1 June – 17 August; June outside: 12.3 °C at night, 21.6 °C by day; card 18–25 °C
First autumn frost	1 November, 132 days after the start
Days in the bed to the first harvest (card)	34
First harvest, if planted in this window	26 July – 20 September
Days left for picking	98
Daylight	15:56 on 25 May, 16:30 on 22 June
Watering outdoors when fruiting (card)	every 2 days; the driest month, November, has 12 rainy days

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

Cucumber in Liberec: care after planting

Planted on 22 June: in the first weeks water every 4 days.

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

29 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 Liberec during the cucumber season

No month of the season averages above the cucumber card's 18–35 °C by day; the warmest, August, averages 22.5 °C. Months that stay below 18 °C even by day on average: October (12.4 °C) and November (5.7 °C). Nights average below 18 °C in every month of the season, from 1 °C to 13.4 °C.

Month	Day, °C	Night, °C	Rain, mm	Rainy days	Daylight on the 15th
June	21.6	12.3	94	14	16:28
July	22.3	13.2	84	14	16:05
August	22.5	13.4	95	13	14:35
September	18.2	10.1	75	10	12:42
October	12.4	6	78	14	10:47
November	5.7	1	60	12	8:59

ERA5 2016–2025, Open-Meteo

Cucumber in nearby cities

1 of the nearest cities share Liberec's date.

City	Distance	Date	Difference
Ústí nad Labem	74 km	22 June – 28 August	same day
Hradec Králové	83 km	7 June – 27 August	15 days earlier
Prague	88 km	3 June – 24 August	19 days earlier
Pardubice	96 km	5 June – 26 August	17 days earlier
Dresden	98 km	5 June – 3 September	17 days earlier
Zielona Góra	134 km	1 June – 29 August	21 days earlier

Where to buy cucumber plants and seeds near Liberec

Buy plants ready to set out from 22 June to 17 August (from 1 June to 17 August for an unheated greenhouse); seed for raising your own is sown from 4 May to 20 July. Within 15 km of Liberec OpenStreetMap lists 1 garden centre, 2 plant nurseries, 1 market and 1 farm shop (collected 28 October 2026).

Tržnice — market
10 km
HECHT — garden centre
Dr. Milady Horákové 11/76, 46007 Liberec · Mon–Sun 08:00–20:00 · 2 km · hecht.cz
Náš grunt — farm shop
Mon–Thu 06:00–19:00; Fri 06:00–20:00; Sat 07:00–17:00; Sun 08:00–19:00 · 14 km
Školka Na Vládní — plant nursery
6 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.

Questions