When to plant pumpkins in Kostanay: 30 May – 7 June

In Kostanay, pumpkin: sow for seedlings from 28 March to 26 April; plant into a greenhouse from 9 May to 7 June; plant out into open ground from 30 May to 7 June.

Pumpkin in Kostanay: soil, season and weather

In Kostanay the soil, not frost, sets the date: the last frost is over around 4 May, but the top 7 cm of soil reaches 18 °C — the minimum on the pumpkin card — only around 30 May, 26 days later. 125 days separate planting out (30 May) from the first autumn frost (2 October); the card's 75 days to the first harvest leave 50 for picking, so a start 7 weeks late would still fit.

Last spring frost	4 May
Top 7 cm of soil at 18 °C	30 May, 26 days after the last frost
First autumn frost	2 October, 125 days after the start
Days in the bed to the first harvest (card)	75
First harvest, if planted in this window	13 August – 21 August
Days left for picking	50
Daylight	14:09 on 18 April, 16:32 on 30 May
Watering outdoors when fruiting (card)	every 5 days; the driest month, October, has 8 rainy days

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

Pumpkin in Kostanay: care after planting

Planted on 30 May: in the first weeks water every 4 days.

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

20 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 Kostanay during the pumpkin season

About 283 mm of rain falls in the season; October is the driest month (36 mm) and July the wettest (60 mm).

Month	Day, °C	Night, °C	Rain, mm	Rainy days	Daylight on the 15th
May	20.4	6.9	48	8	15:50
June	23.9	12.4	51	8	16:56
July	26.2	15.3	60	10	16:30
August	24.7	13.5	51	8	14:50
September	17.3	7.1	37	7	12:45
October	8.9	0.3	36	8	10:40

ERA5 2016–2025, Open-Meteo

Pumpkin in nearby cities

All the nearest cities on our list plant pumpkin later than Kostanay; the closest date is in Chelyabinsk, 1 day later.

City	Distance	Date	Difference
Chelyabinsk	261 km	31 May – 9 June	1 day later
Kurgan	273 km	1 June – 6 June	2 days later
Magnitogorsk	307 km	2 June – 13 July	3 days later
Kokshetau	384 km	1 June – 4 June	2 days later
Petropavl	405 km	7 June – 16 July	8 days later
Yekaterinburg	447 km	15 June – 15 July	16 days later

Where to buy pumpkin plants and seeds near Kostanay

Buy plants ready to set out from 30 May to 7 June (from 9 May to 7 June for an unheated greenhouse); seed for raising your own is sown from 28 March to 26 April. Within 15 km of Kostanay OpenStreetMap lists 3 garden centres, 10 markets and 1 farm shop (collected 27 October 2026).

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