When to plant watermelons in Polatsk: 11 June – 11 July

In Polatsk, watermelon: sow for seedlings from 23 April to 13 June; plant into a greenhouse from 21 May to 11 July; plant out into open ground from 11 June to 11 July.

Watermelon in Polatsk: soil, season and weather

In Polatsk the soil, not frost, sets the date: the last frost is over around 5 May, but the top 7 cm of soil reaches 18 °C — the minimum on the watermelon card — only around 11 June, 37 days later.

Last spring frost	5 May
Top 7 cm of soil at 18 °C	11 June, 37 days after the last frost
Into an unheated greenhouse	21 May – 11 July; May outside: 6.9 °C at night, 17.1 °C by day; card 18–35 °C
First autumn frost	20 October, 131 days after the start
Days in the bed to the first harvest (card)	59
First harvest, if planted in this window	9 August – 8 September
Days left for picking	72
Daylight	16:08 on 14 May, 17:23 on 11 June
Watering outdoors when fruiting (card)	every 5 days; the driest month, September, has 10 rainy days

The same dates in Polatsk hold for Cucumber, Bell Pepper, Eggplant, Zucchini and Pumpkin.

Watermelon in Polatsk: care after planting

Planted on 11 June: in the first weeks water every 5 days.

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

11 June — feed: balanced (NPK)

Pests and diseases of watermelon 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 Polatsk during the watermelon season

No month of the season averages above the watermelon card's 18–35 °C by day; the warmest, July, averages 22.7 °C. Months that stay below 18 °C even by day on average: September (17.4 °C) and October (10.3 °C). Nights average below 18 °C in every month of the season, from 4.3 °C to 14.1 °C.

Month	Day, °C	Night, °C	Rain, mm	Rainy days	Daylight on the 15th
June	22.3	12.4	72	12	17:27
July	22.7	14.1	115	16	16:57
August	22.4	13.4	90	12	15:05
September	17.4	9.3	48	10	12:49
October	10.3	4.3	71	15	10:33

ERA5 2016–2025, Open-Meteo

Watermelon in nearby cities

Around Polatsk, Barysaw is 5 days earlier and Vitebsk 7 days later.

City	Distance	Date	Difference
Vitebsk	95 km	18 June – 7 July	7 days later
Barysaw	141 km	6 June – 11 July	5 days earlier
Orsha	150 km	12 June – 2 July	1 day later
Maladzyechna	180 km	11 June – 10 July	same day
Minsk	194 km	11 June – 22 July	same day
Mogilev	203 km	9 June – 8 July	2 days earlier

Where to buy watermelon plants and seeds near Polatsk

Buy plants ready to set out from 11 June to 11 July (from 21 May to 11 July for an unheated greenhouse); seed for raising your own is sown from 23 April to 13 June. Within 15 km of Polatsk OpenStreetMap lists 1 garden centre, 1 plant nursery and 6 markets (collected 27 October 2026).

Паўночны рынак — market
Будаўнічая вуліца 19 · Tue–Sun 09:00–16:00 · 3 km · orionstart.by
Рынак «Дзісна» — market
вуліца Блахіна 12 · 10 km
Цветы, кустарники — garden centre
1 km
Лесагадавальнік Полацкага лясгаса — plant nursery
12 km · polotskleshoz.by

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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