When to plant watermelons in Bolzano: 29 May – 7 August

In Bolzano, watermelon: sow for seedlings from 10 April to 10 July; plant into a greenhouse from 8 May to 7 August; plant out into open ground from 29 May to 7 August.

Watermelon in Bolzano: soil, season and weather

In Bolzano the soil, not frost, sets the date: the last frost is over around 27 March, but the top 7 cm of soil reaches 18 °C — the minimum on the watermelon card — only around 29 May, 63 days later.

Last spring frost	27 March
Top 7 cm of soil at 18 °C	29 May, 63 days after the last frost
Into an unheated greenhouse	8 May – 7 August; May outside: 11.9 °C at night, 21.9 °C by day; card 18–35 °C
First autumn frost	16 November, 171 days after the start
Days in the bed to the first harvest (card)	59
First harvest, if planted in this window	27 July – 5 October
Days left for picking	112
Daylight	14:22 on 1 May, 15:29 on 29 May
Watering outdoors when fruiting (card)	every 5 days; the driest month, November, has 10 rainy days

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

Watermelon in Bolzano: care after planting

Planted on 29 May: in the first weeks water every 5 days.

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

29 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 Bolzano during the watermelon season

No month of the season averages above the watermelon card's 18–35 °C by day; the warmest, July, averages 29.6 °C. Months that stay below 18 °C even by day on average: November (12.4 °C). Nights average below 18 °C in May, June and September–November (3.1–16.7 °C).

Month	Day, °C	Night, °C	Rain, mm	Rainy days	Daylight on the 15th
May	21.9	11.9	129	16	14:59
June	28.1	16.7	105	14	15:48
July	29.6	18	118	13	15:29
August	29.6	18	120	11	14:14
September	24.5	14.2	103	12	12:36
October	19.5	9.2	121	11	10:58
November	12.4	3.1	98	10	9:26

ERA5 2016–2025, Open-Meteo

Watermelon in nearby cities

Around Bolzano, Padua is 14 days earlier and Innsbruck 31 days later.

City	Distance	Date	Difference
Trento	51 km	19 June – 1 August	21 days later
Innsbruck	86 km	29 June – 9 August	31 days later
Vicenza	107 km	24 May – 15 August	5 days earlier
Treviso	115 km	19 May – 14 August	10 days earlier
Verona	121 km	29 May – 18 August	same day
Padua	128 km	15 May – 19 August	14 days earlier

Where to buy watermelon plants and seeds near Bolzano

Buy plants ready to set out from 29 May to 7 August (from 8 May to 7 August for an unheated greenhouse); seed for raising your own is sown from 10 April to 10 July. Within 15 km of Bolzano OpenStreetMap lists 18 garden centres, 3 farm-supply shops, 2 plant nurseries, 3 markets and 16 farm shops (collected 27 October 2026).

Walter Unterholzer Gärtnerei - Floricoltura — garden centre
3 km
Reider Pflanzen Center - Centro Piante — garden centre
4 km
Gartenmarkt - Tutto Giardino — garden centre
8 km
Silbernagl — garden centre
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