When to plant tomatoes in Hradec Králové: 21 May – 22 July

In Hradec Králové, tomato: sow for seedlings from 9 March to 31 May; plant into a greenhouse from 30 April to 22 July; plant out into open ground from 21 May to 22 July. For plants and seeds, the places nearby include Microgreens (farm shop, 3 km) and John zahradnictví s.r.o. (garden centre, 3 km); addresses and opening hours are below.

Tomato 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 15 °C — the minimum on the tomato card — only around 21 May, 33 days later.

Last spring frost	18 April
Top 7 cm of soil at 15 °C	21 May, 33 days after the last frost
Into an unheated greenhouse	30 April – 22 July; April outside: 3.9 °C at night, 14.1 °C by day; card 16–27 °C
First autumn frost	11 November, 174 days after the start
Days in the bed to the first harvest (card)	70
First harvest, if planted in this window	30 July – 30 September
Days left for picking	104
Daylight	12:46 on 30 March, 15:41 on 21 May
Watering outdoors when fruiting (card)	every 3 days; the driest month, November, has 10 rainy days

Tomato in Hradec Králové: care after planting

Planted on 21 May: in the first weeks water every 4 days.

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

21 May — feed: balanced (NPK)
18 June — feed: nitrogen

Pests and diseases of tomato 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 tomato season

No month of the season averages above the tomato card's 16–27 °C by day; the warmest, August, averages 24.8 °C. Months that stay below 16 °C even by day on average: October (14.4 °C) and November (7.5 °C). Nights average below 16 °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
May	18.4	8.3	69	12	15:25
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

Tomato in nearby cities

Around Hradec Králové, Prague is 9 days earlier and Liberec 10 days later.

City	Distance	Date	Difference
Pardubice	19 km	21 May – 21 July	same day
Liberec	83 km	31 May – 12 July	10 days later
Prague	100 km	12 May – 19 July	9 days earlier
Olomouc	123 km	17 May – 17 July	4 days earlier
Brno	126 km	26 May – 17 July	5 days later
Wrocław	131 km	12 May – 22 July	9 days earlier

Where to buy tomato plants and seeds near Hradec Králové

Buy plants ready to set out from 21 May to 22 July (from 30 April to 22 July for an unheated greenhouse); seed for raising your own is sown from 9 March to 31 May. Within 15 km of Hradec Králové OpenStreetMap lists 4 garden centres, 1 farm-supply shop and 4 farm shops (collected 28 October 2026).

John zahradnictví s.r.o. — garden centre
Pražská třída 16/106, 50004 · Mon–Fri 08:00–18:00; Sat 08:00–16:00; Sun 09:00–16:00 · 3 km
Valenta Vladimír — garden centre
Mon–Sun 09:00–16:00 · 10 km
KAMÍR a Co spol. s r.o. — farm supply
Hradecká 92, 55101 Jaroměř · Mon–Fri 8:00 - 12:00 12:30 - 16:00 · 15 km
Microgreens — farm shop
Mon–Fri 07:30–12:30, 13:00–18:00; Sat 09:30–13:00 · 3 km · ceskalouka.cz

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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