When to plant watermelons in Mantua: 14 May – 19 August

In Mantua, watermelon: sow for seedlings from 26 March to 22 July; plant into a greenhouse from 23 April to 19 August; plant out into open ground from 14 May to 19 August.

Watermelon in Mantua: soil, season and weather

In Mantua the soil, not frost, sets the date: the last frost is over around 2 March, but the top 7 cm of soil reaches 18 °C — the minimum on the watermelon card — only around 14 May, 73 days later.

Last spring frost	2 March
Top 7 cm of soil at 18 °C	14 May, 73 days after the last frost
Into an unheated greenhouse	23 April – 19 August; April outside: 8.3 °C at night, 18.7 °C by day; card 18–35 °C
First autumn frost	28 November, 198 days after the start
Days in the bed to the first harvest (card)	59
First harvest, if planted in this window	12 July – 17 October
Days left for picking	139
Daylight	13:32 on 16 April, 14:48 on 14 May
Watering outdoors when fruiting (card)	every 5 days; the driest month, July, has 10 rainy days

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

Watermelon in Mantua: care after planting

Planted on 14 May: in the first weeks water every 5 days.

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

14 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 Mantua during the watermelon season

No month of the season averages above the watermelon card's 18–35 °C by day; the warmest, July, averages 30.3 °C. Months that stay below 18 °C even by day on average: November (12.5 °C). Nights average below 18 °C in May and September–November (5.5–15.6 °C).

Month	Day, °C	Night, °C	Rain, mm	Rainy days	Daylight on the 15th
May	22.1	12.8	145	16	14:51
June	28.3	18.2	82	10	15:37
July	30.3	20.2	75	10	15:19
August	30.1	20.1	88	10	14:08
September	25	15.6	98	9	12:35
October	19.5	11.1	84	8	11:01
November	12.5	5.5	94	10	9:34

ERA5 2016–2025, Open-Meteo

Watermelon in nearby cities

Around Mantua, Ferrara is 1 day earlier and Verona 15 days later.

City	Distance	Date	Difference
Verona	35 km	29 May – 18 August	15 days later
Parma	54 km	19 May – 20 August	5 days later
Modena	58 km	14 May – 21 August	same day
Brescia	62 km	15 May – 19 August	1 day later
Vicenza	74 km	24 May – 15 August	10 days later
Ferrara	74 km	13 May – 19 August	1 day earlier

Where to buy watermelon plants and seeds near Mantua

Buy plants ready to set out from 14 May to 19 August (from 23 April to 19 August for an unheated greenhouse); seed for raising your own is sown from 26 March to 22 July. Within 15 km of Mantua OpenStreetMap lists 1 garden centre (collected 27 October 2026).

Azienda Agricola Florovivaistica Cobelli Fausto — garden centre
14 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