GreenlyWhen to plant zucchini in Hradec Králové: 7 June – 25 August
In Hradec Králové, zucchini: sow for seedlings from 26 April to 4 August; plant into a greenhouse from 17 May to 25 August; plant out into open ground from 7 June to 25 August. For plants and seeds, the places nearby include John zahradnictví s.r.o. (garden centre, 3 km) and Valenta Vladimír (garden centre, 10 km); addresses and opening hours are below.
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Zucchini 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 zucchini 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 |
| First autumn frost | 11 November, 157 days after the start |
| Days in the bed to the first harvest (card) | 36 |
| First harvest, if planted in this window | 13 July – 30 September |
| Days left for picking | 121 |
| Daylight | 15:31 on 17 May, 16:15 on 7 June |
| Watering outdoors when fruiting (card) | every 3 days; the driest month, November, has 10 rainy days |
The same dates in Hradec Králové hold for Cucumber, Bell Pepper, Eggplant, Pumpkin and Watermelon.
Zucchini in Hradec Králové: care after planting
Planted on 7 June: in the first weeks water every 4 days.
Pests and diseases of zucchini to watch for:
Weather in Hradec Králové during the zucchini season
About 428 mm of rain falls in the season; November is the driest month (45 mm) and August the wettest (91 mm).
| 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
Zucchini in nearby cities
Around Hradec Králové, Prague is 4 days earlier and Liberec 15 days later.
Where to buy zucchini plants and seeds near Hradec Králové
Buy plants ready to set out from 7 June to 25 August (from 17 May to 25 August for an unheated greenhouse); seed for raising your own is sown from 26 April to 4 August. Within 15 km of Hradec Králové OpenStreetMap lists 4 garden centres, 1 farm-supply shop and 4 farm shops (collected 28 October 2026).
- Ovocné sady Vyčítal — farm shop · sells: apple, cherry
9 km - Ivo Košťál — farm shop · sells: apple
9 km - 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
Places: © OpenStreetMap contributors, ODbL.
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.
- How to grow zucchini
- All frost dates and weather of Hradec Králové
- Shops and markets: Hradec Králové
- Selling a surplus in Czechia
- Hradec Králové: #513 of 801 by frost-free season
- Moon planting calendar for November 2026
- How we calculate the dates
Questions
When to plant zucchini in Hradec Králové?
In Hradec Králové, zucchini: sow for seedlings from 26 April to 4 August; plant into a greenhouse from 17 May to 25 August; plant out into open ground from 7 June to 25 August.
When to sow zucchini for seedlings in Hradec Králové?
Sow for seedlings from 26 April to 4 August.
When is the last spring frost in Hradec Králové?
Last spring frost around 18 April, first autumn frost around 11 November.
