When to plant tomatoes in Tomsk: 6 June – 7 June

In Tomsk, tomato: sow for seedlings from 25 March to 16 April; plant into a greenhouse from 16 May to 7 June; plant out into open ground from 6 June to 7 June. For plants and seeds, the places nearby include Томскагроснаб (farm supply, 2 km) and Семена Томская грядка (garden centre, 3 km); addresses and opening hours are below.

Tomato in Tomsk: soil, season and weather

In Tomsk the soil, not frost, sets the date: the last frost is over around 20 May, but the top 7 cm of soil reaches 15 °C — the minimum on the tomato card — only around 6 June, 17 days later. 113 days separate planting out (6 June) from the first autumn frost (27 September); the card's 70 days to the first harvest leave 43 for picking, so a start 6 weeks late would still fit.

Last spring frost	20 May
Top 7 cm of soil at 15 °C	6 June, 17 days after the last frost
Into an unheated greenhouse	16 May – 7 June; May outside: 4.2 °C at night, 15.4 °C by day; card 16–27 °C
First autumn frost	27 September, 113 days after the start
Days in the bed to the first harvest (card)	70
First harvest, if planted in this window	15 August – 16 August
Days left for picking	43
Daylight	14:12 on 15 April, 17:29 on 6 June
Watering outdoors when fruiting (card)	every 3 days; the driest month, September, has 12 rainy days

Tomato in Tomsk: care after planting

Planted on 6 June: in the first weeks water every 4 days.

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

6 June — feed: balanced (NPK)
4 July — 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 Tomsk during the tomato season

No month of the season averages above the tomato card's 16–27 °C by day; the warmest, July, averages 23.7 °C. Months that stay below 16 °C even by day on average: September (14.5 °C). Nights average below 16 °C in every month of the season, from 5.6 °C to 14.5 °C.

Month	Day, °C	Night, °C	Rain, mm	Rainy days	Daylight on the 15th
June	22.8	12.5	58	11	17:43
July	23.7	14.5	76	13	17:10
August	21.5	12.1	68	13	15:13
September	14.5	5.6	55	12	12:50

ERA5 2016–2025, Open-Meteo

Tomato in nearby cities

Around Tomsk, Pavlodar is 24 days earlier and Krasnoyarsk 4 days later.

City	Distance	Date	Difference
Kemerovo	146 km	31 May – 6 June	6 days earlier
Novosibirsk	208 km	29 May – 8 June	8 days earlier
Novokuznetsk	334 km	5 June – 10 June	1 day earlier
Barnaul	359 km	25 May – 9 June	12 days earlier
Krasnoyarsk	489 km	10 June – 19 July	4 days later
Pavlodar	698 km	13 May – 14 June	24 days earlier

Where to buy tomato plants and seeds near Tomsk

Buy plants ready to set out from 6 June to 7 June (from 16 May to 7 June for an unheated greenhouse); seed for raising your own is sown from 25 March to 16 April. Within 15 km of Tomsk OpenStreetMap lists 4 garden centres, 1 farm-supply shop, 2 plant nurseries, 13 markets and 2 farm shops (collected 27 October 2026).

Садовый — garden centre
улица Карташова 42А, 634041 Томск · Mon–Fri 10:00–19:00; Sat–Sun 10:00–18:00 · 4 km · sadovnik.tomsk.ru
Семена Томская грядка — garden centre
улица Шевченко 37 · 10:00–19:00 · 3 km
Семена фирма Поле — garden centre
Mon, Sat 09:00–17:00; Tue–Fri 09:00–18:00; Sun 09:00–16:00 · 3 km
Томскагроснаб — farm supply
Mon–Fri 09:00–18:00; Sat 09:00–14:00 · 2 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.

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