When to plant watermelons in Boryspil: 31 May – 21 July

In Boryspil, watermelon: sow for seedlings from 12 April to 23 June; plant into a greenhouse from 10 May to 21 July; plant out into open ground from 31 May to 21 July. For plants and seeds, the places nearby include Мiнi Буд (garden centre, 10 km); addresses and opening hours are below.

Watermelon in Boryspil: soil, season and weather

In Boryspil the soil, not frost, sets the date: the last frost is over around 10 April, but the top 7 cm of soil reaches 18 °C — the minimum on the watermelon card — only around 31 May, 51 days later.

Last spring frost	10 April
Top 7 cm of soil at 18 °C	31 May, 51 days after the last frost
Into an unheated greenhouse	10 May – 21 July; May outside: 9.4 °C at night, 20 °C by day; card 18–35 °C
First autumn frost	30 October, 152 days after the start
Days in the bed to the first harvest (card)	59
First harvest, if planted in this window	29 July – 18 September
Days left for picking	93
Daylight	14:49 on 3 May, 16:05 on 31 May
Watering outdoors when fruiting (card)	every 5 days; the driest month, September, has 6 rainy days

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

Watermelon in Boryspil: care after planting

Planted on 31 May: in the first weeks water every 5 days.

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

31 May — 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 Boryspil during the watermelon season

No month of the season averages above the watermelon card's 18–35 °C by day; the warmest, August, averages 26.5 °C. Months that stay below 18 °C even by day on average: October (13.8 °C). Nights average below 18 °C in every month of the season, from 6.1 °C to 16.3 °C.

Month	Day, °C	Night, °C	Rain, mm	Rainy days	Daylight on the 15th
May	20	9.4	69	11	15:26
June	25.5	15.1	60	11	16:24
July	26.4	16.3	70	10	16:01
August	26.5	15.8	41	6	14:33
September	21.1	11.1	34	6	12:41
October	13.8	6.1	63	9	10:49

ERA5 2016–2025, Open-Meteo

Watermelon in nearby cities

Around Boryspil, Cherkasy is 5 days earlier and Irpin 6 days later.

City	Distance	Date	Difference
Brovary	21 km	31 May – 31 July	same day
Kyiv	32 km	30 May – 31 July	1 day earlier
Irpin	54 km	6 June – 13 July	6 days later
Fastiv	79 km	31 May – 13 July	same day
Bila Tserkva	85 km	3 June – 21 July	3 days later
Cherkasy	129 km	26 May – 2 August	5 days earlier

Where to buy watermelon plants and seeds near Boryspil

Buy plants ready to set out from 31 May to 21 July (from 10 May to 21 July for an unheated greenhouse); seed for raising your own is sown from 12 April to 23 June. Within 15 km of Boryspil OpenStreetMap lists 1 garden centre, 1 plant nursery, 5 markets and 1 farm shop (collected 28 October 2026).

Мiнi Буд — garden centre
Т-10-16 · 10 km
Центральний ринок — market
вулиця Київський Шлях 84 · 08:00–22:00 · 0 km
Оптовий ринок — market
вулиця Київський Шлях 10 · 1 km
Ринок на розгалудженні — market
Лугова вулиця, Борисполь · 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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