When to plant tomatoes in Semey: 14 May – 9 June

In Semey, tomato: sow for seedlings from 2 March to 18 April; plant into a greenhouse from 23 April to 9 June; plant out into open ground from 14 May to 9 June.

Tomato in Semey: soil, season and weather

In Semey the soil, not frost, sets the date: the last frost is over around 25 April, but the top 7 cm of soil reaches 15 °C — the minimum on the tomato card — only around 14 May, 19 days later.

Last spring frost	25 April
Top 7 cm of soil at 15 °C	14 May, 19 days after the last frost
Into an unheated greenhouse	23 April – 9 June; April outside: 0.6 °C at night, 14.7 °C by day; card 16–27 °C
First autumn frost	29 September, 138 days after the start
Days in the bed to the first harvest (card)	70
First harvest, if planted in this window	23 July – 18 August
Days left for picking	68
Daylight	12:19 on 23 March, 15:24 on 14 May
Watering outdoors when fruiting (card)	every 3 days; the driest month, May, has 7 rainy days

Tomato in Semey: care after planting

Planted on 14 May: in the first weeks water every 4 days.

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

14 May — feed: balanced (NPK)
11 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 Semey during the tomato season

Days average above the tomato card's 16–27 °C in July (27.9 °C). Nights average below 16 °C in May, June and August, September (7.3–14.7 °C).

Month	Day, °C	Night, °C	Rain, mm	Rainy days	Daylight on the 15th
May	21.3	7.9	28	7	15:27
June	26.9	14.7	37	8	16:25
July	27.9	16.4	43	10	16:02
August	25.7	13.9	42	8	14:33
September	18.9	7.3	33	7	12:41

ERA5 2016–2025, Open-Meteo

Tomato in nearby cities

Around Semey, Oskemen is 1 day earlier and Novokuznetsk 22 days later.

City	Distance	Date	Difference
Oskemen	177 km	13 May – 11 June	1 day earlier
Pavlodar	308 km	13 May – 14 June	1 day earlier
Barnaul	406 km	25 May – 9 June	11 days later
Karaganda	514 km	14 May – 9 June	same day
Novosibirsk	543 km	29 May – 8 June	15 days later
Novokuznetsk	599 km	5 June – 10 June	22 days later

Where to buy tomato plants and seeds near Semey

Buy plants ready to set out from 14 May to 9 June (from 23 April to 9 June for an unheated greenhouse); seed for raising your own is sown from 2 March to 18 April. Within 15 km of Semey OpenStreetMap lists 2 markets (collected 27 October 2026).

Мереке — market
342-ый квартал 9774, Семей · 2 km
Рынок — market
0 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