When to plant tomatoes in Penza: 20 May – 25 June

In Penza, tomato: sow for seedlings from 8 March to 4 May; plant into a greenhouse from 29 April to 25 June; plant out into open ground from 20 May to 25 June. For plants and seeds, the places nearby include Зеленый дом (garden centre, 5 km) and Бамбук (garden centre, 7 km); addresses and opening hours are below.

Tomato in Penza: soil, season and weather

In Penza the soil, not frost, sets the date: the last frost is over around 30 April, but the top 7 cm of soil reaches 15 °C — the minimum on the tomato card — only around 20 May, 20 days later.

Last spring frost	30 April
Top 7 cm of soil at 15 °C	20 May, 20 days after the last frost
Into an unheated greenhouse	29 April – 25 June; April outside: 2 °C at night, 13.3 °C by day; card 16–27 °C
First autumn frost	15 October, 148 days after the start
Days in the bed to the first harvest (card)	70
First harvest, if planted in this window	29 July – 3 September
Days left for picking	78
Daylight	12:46 on 29 March, 16:05 on 20 May
Watering outdoors when fruiting (card)	every 3 days; the driest month, August, has 7 rainy days

Tomato in Penza: care after planting

Planted on 20 May: in the first weeks water every 4 days.

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

20 May — feed: balanced (NPK)
17 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 Penza during the tomato season

No month of the season averages above the tomato card's 16–27 °C by day; the warmest, July, averages 25.9 °C. Months that stay below 16 °C even by day on average: October (10.5 °C). Nights average below 16 °C in every month of the season, from 3.2 °C to 14.9 °C.

Month	Day, °C	Night, °C	Rain, mm	Rainy days	Daylight on the 15th
May	19.2	7.4	59	11	15:50
June	23.4	12.2	63	11	16:56
July	25.9	14.9	75	11	16:30
August	25.3	13.8	43	7	14:50
September	18	8.2	46	8	12:45
October	10.5	3.2	51	11	10:40

ERA5 2016–2025, Open-Meteo

Tomato in nearby cities

Around Penza, Saratov is 11 days earlier and Saransk 3 days later.

City	Distance	Date	Difference
Saransk	109 km	23 May – 24 June	3 days later
Saratov	198 km	9 May – 6 July	11 days earlier
Tambov	244 km	11 May – 29 June	9 days earlier
Ulyanovsk	255 km	15 May – 3 July	5 days earlier
Tolyatti	290 km	11 May – 3 July	9 days earlier
Samara	342 km	15 May – 1 July	5 days earlier

Where to buy tomato plants and seeds near Penza

Buy plants ready to set out from 20 May to 25 June (from 29 April to 25 June for an unheated greenhouse); seed for raising your own is sown from 8 March to 4 May. Within 15 km of Penza OpenStreetMap lists 11 garden centres, 1 farm-supply shop, 1 plant nursery, 7 markets and 4 farm shops (collected 27 October 2026).

Наша Дача — garden centre
Комсомольская улица 12/2, Заречный · 11 km · nashadacha-penza.ru
Зеленый дом — garden centre
Mon–Sun 08:00–20:00 · 5 km · garden-zoo.ru
Бамбук — garden centre
улица Собинова 3 к1 · 7 km
Грядка — garden centre
проспект Строителей 37Г · 8 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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