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

In Treviso, watermelon: sow for seedlings from 31 March to 17 July; plant into a greenhouse from 28 April to 14 August; plant out into open ground from 19 May to 14 August.

Watermelon in Treviso: soil, season and weather

In Treviso the soil, not frost, sets the date: the last frost is over around 19 March, but the top 7 cm of soil reaches 18 °C — the minimum on the watermelon card — only around 19 May, 61 days later.

Last spring frost	19 March
Top 7 cm of soil at 18 °C	19 May, 61 days after the last frost
Into an unheated greenhouse	28 April – 14 August; April outside: 7.7 °C at night, 18 °C by day; card 18–35 °C
First autumn frost	23 November, 188 days after the start
Days in the bed to the first harvest (card)	59
First harvest, if planted in this window	17 July – 12 October
Days left for picking	129
Daylight	13:48 on 21 April, 15:03 on 19 May
Watering outdoors when fruiting (card)	every 5 days; the driest month, July, has 12 rainy days

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

Watermelon in Treviso: care after planting

Planted on 19 May: in the first weeks water every 5 days.

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

19 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 Treviso during the watermelon season

No month of the season averages above the watermelon card's 18–35 °C by day; the warmest, August, averages 29.3 °C. Months that stay below 18 °C even by day on average: November (12.8 °C). Nights average below 18 °C in May, June and September–November (4.7–17.4 °C).

Month	Day, °C	Night, °C	Rain, mm	Rainy days	Daylight on the 15th
May	21.5	12.3	169	16	14:54
June	27.2	17.4	101	11	15:41
July	29.1	19.1	93	12	15:22
August	29.3	19.3	104	9	14:10
September	24.3	15	144	11	12:35
October	19.1	10.3	107	10	11:00
November	12.8	4.7	125	10	9:31

ERA5 2016–2025, Open-Meteo

Watermelon in nearby cities

Around Treviso, Padua is 4 days earlier and Trento 31 days later.

City	Distance	Date	Difference
Venice	27 km	16 May – 27 August	3 days earlier
Padua	40 km	15 May – 19 August	4 days earlier
Vicenza	55 km	24 May – 15 August	5 days later
Udine	89 km	23 May – 13 August	4 days later
Trento	97 km	19 June – 1 August	31 days later
Verona	101 km	29 May – 18 August	10 days later

Where to buy watermelon plants and seeds near Treviso

Buy plants ready to set out from 19 May to 14 August (from 28 April to 14 August for an unheated greenhouse); seed for raising your own is sown from 31 March to 17 July. Within 15 km of Treviso OpenStreetMap lists 6 garden centres, 1 farm-supply shop, 1 plant nursery, 5 markets and 2 farm shops (collected 27 October 2026).

Salvadori — garden centre
6 km
Agricoltura Domani — garden centre
13 km
Pavan Center — plant nursery
4 km
Pescheria — market
1 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