When to plant watermelons in Ryazan: 6 June – 14 July

In Ryazan, watermelon: sow for seedlings from 18 April to 16 June; plant into a greenhouse from 16 May to 14 July; plant out into open ground from 6 June to 14 July.

Watermelon in Ryazan: soil, season and weather

In Ryazan the soil, not frost, sets the date: the last frost is over around 1 May, but the top 7 cm of soil reaches 18 °C — the minimum on the watermelon card — only around 6 June, 36 days later.

Last spring frost	1 May
Top 7 cm of soil at 18 °C	6 June, 36 days after the last frost
Into an unheated greenhouse	16 May – 14 July; May outside: 7.7 °C at night, 18.4 °C by day; card 18–35 °C
First autumn frost	23 October, 139 days after the start
Days in the bed to the first harvest (card)	59
First harvest, if planted in this window	4 August – 11 September
Days left for picking	80
Daylight	15:41 on 9 May, 17:03 on 6 June
Watering outdoors when fruiting (card)	every 5 days; the driest month, September, has 7 rainy days

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

Watermelon in Ryazan: care after planting

Planted on 6 June: in the first weeks water every 5 days.

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

6 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 Ryazan during the watermelon season

No month of the season averages above the watermelon card's 18–35 °C by day; the warmest, July, averages 25.1 °C. Months that stay below 18 °C even by day on average: September (17.9 °C) and October (10.3 °C). Nights average below 18 °C in every month of the season, from 3.8 °C to 15.4 °C.

Month	Day, °C	Night, °C	Rain, mm	Rainy days	Daylight on the 15th
June	23	12.6	64	10	17:15
July	25.1	15.4	72	12	16:46
August	24.3	14.1	57	8	14:59
September	17.9	8.8	40	7	12:47
October	10.3	3.8	59	12	10:36

ERA5 2016–2025, Open-Meteo

Watermelon in nearby cities

Around Ryazan, Lipetsk is 8 days earlier and Tula 8 days later.

City	Distance	Date	Difference
Tula	143 km	14 June – 6 July	8 days later
Vladimir	174 km	13 June – 6 July	7 days later
Moscow	182 km	14 June – 5 July	8 days later
Kaluga	221 km	12 June – 2 July	6 days later
Lipetsk	227 km	29 May – 8 July	8 days earlier
Tambov	239 km	1 June – 10 July	5 days earlier

Where to buy watermelon plants and seeds near Ryazan

Buy plants ready to set out from 6 June to 14 July (from 16 May to 14 July for an unheated greenhouse); seed for raising your own is sown from 18 April to 16 June. Within 15 km of Ryazan OpenStreetMap lists 6 garden centres, 5 markets and 3 farm shops (collected 27 October 2026).

Саженцы — garden centre
10 km
Универсальный рынок — market
3 km
Молодёжный — market
3 km
ЖИТО — farm shop
4 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