When to plant zucchini in Plzeň: 18 June – 19 August

In Plzeň, zucchini: sow for seedlings from 7 May to 29 July; plant into a greenhouse from 28 May to 19 August; plant out into open ground from 18 June to 19 August.

Zucchini 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 zucchini 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
First autumn frost	5 November, 140 days after the start
Days in the bed to the first harvest (card)	36
First harvest, if planted in this window	24 July – 24 September
Days left for picking	104
Daylight	15:53 on 28 May, 16:19 on 18 June
Watering outdoors when fruiting (card)	every 3 days; the driest month, November, has 10 rainy days

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

Zucchini in Plzeň: care after planting

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

Pests and diseases of zucchini to watch for:

Weather in Plzeň during the zucchini season

About 402 mm of rain falls in the season; November is the driest month (49 mm) and August the wettest (88 mm).

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

Zucchini 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 – 22 August	15 days earlier
Ústí nad Labem	111 km	22 June – 26 August	4 days later
České Budějovice	117 km	18 June – 20 August	same day
Regensburg	124 km	14 June – 21 August	4 days earlier
Dresden	147 km	5 June – 1 September	13 days earlier
Liberec	165 km	22 June – 15 August	4 days later

Where to buy zucchini plants and seeds near Plzeň

Buy plants ready to set out from 18 June to 19 August (from 28 May to 19 August for an unheated greenhouse); seed for raising your own is sown from 7 May to 29 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).

Pools — garden centre
2 km
Pěstírna DEPO2015 — plant nursery
1 km
rekultivace lomu — plant nursery
13 km
Městská Tržnice DEPO2015 — market
1 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