When to plant pumpkins in Olomouc: 3 June – 12 July

In Olomouc, pumpkin: sow for seedlings from 1 April to 31 May; plant into a greenhouse from 13 May to 12 July; plant out into open ground from 3 June to 12 July.

Pumpkin in Olomouc: soil, season and weather

In Olomouc the soil, not frost, sets the date: the last frost is over around 21 April, but the top 7 cm of soil reaches 18 °C — the minimum on the pumpkin card — only around 3 June, 43 days later.

Last spring frost	21 April
Top 7 cm of soil at 18 °C	3 June, 43 days after the last frost
First autumn frost	6 November, 156 days after the start
Days in the bed to the first harvest (card)	75
First harvest, if planted in this window	17 August – 25 September
Days left for picking	81
Daylight	14:08 on 22 April, 16:03 on 3 June
Watering outdoors when fruiting (card)	every 5 days; the driest month, November, has 9 rainy days

The same dates in Olomouc hold for Cucumber, Bell Pepper, Eggplant, Zucchini and Watermelon.

Pumpkin in Olomouc: care after planting

Planted on 3 June: in the first weeks water every 4 days.

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

24 June — feed: nitrogen

Pests and diseases of pumpkin 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 Olomouc during the pumpkin season

About 447 mm of rain falls in the season; November is the driest month (53 mm) and September the wettest (93 mm).

Month	Day, °C	Night, °C	Rain, mm	Rainy days	Daylight on the 15th
June	25	13.9	80	12	16:16
July	26.1	15.2	76	12	15:54
August	26.3	15.3	85	10	14:29
September	21.2	11.2	93	10	12:40
October	15	6.6	60	10	10:51
November	8.2	1.9	53	9	9:07

ERA5 2016–2025, Open-Meteo

Pumpkin in nearby cities

Around Olomouc, Opole is 1 day earlier and Ostrava 5 days later.

City	Distance	Date	Difference
Zlín	51 km	6 June – 12 July	3 days later
Brno	63 km	6 June – 12 July	3 days later
Ostrava	77 km	8 June – 15 July	5 days later
Pardubice	117 km	5 June – 16 July	2 days later
Hradec Králové	123 km	7 June – 17 July	4 days later
Opole	130 km	2 June – 24 July	1 day earlier

Where to buy pumpkin plants and seeds near Olomouc

Buy plants ready to set out from 3 June to 12 July (from 13 May to 12 July for an unheated greenhouse); seed for raising your own is sown from 1 April to 31 May. Within 15 km of Olomouc OpenStreetMap lists 5 garden centres, 1 farm-supply shop, 1 plant nursery and 1 market (collected 28 October 2026).

Florcenter s.r.o. — garden centre
2 km · florcenter.cz
Zahradnictví Zmeškalovi — garden centre
6 km · zahradnictvizmeskalovi.cz
Ovocná školka Mezice, ZD Unčovice — garden centre
12 km
Trvalková školka — plant nursery
13 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