When to plant watermelons in Como: 29 May – 14 August

In Como, watermelon: sow for seedlings from 10 April to 17 July; plant into a greenhouse from 8 May to 14 August; plant out into open ground from 29 May to 14 August. For plants and seeds, the places nearby include Regina Bianca Bufala di Battipaglia (farm shop, 3 km) and I Tesori della Daunia (farm shop, 3 km); addresses and opening hours are below.

Watermelon in Como: soil, season and weather

In Como the soil, not frost, sets the date: the last frost is over around 15 March, but the top 7 cm of soil reaches 18 °C — the minimum on the watermelon card — only around 29 May, 75 days later.

Last spring frost	15 March
Top 7 cm of soil at 18 °C	29 May, 75 days after the last frost
Into an unheated greenhouse	8 May – 14 August; May outside: 11.7 °C at night, 20.2 °C by day; card 18–35 °C
First autumn frost	23 November, 178 days after the start
Days in the bed to the first harvest (card)	59
First harvest, if planted in this window	27 July – 12 October
Days left for picking	119
Daylight	14:18 on 1 May, 15:23 on 29 May
Watering outdoors when fruiting (card)	every 5 days; the driest month, November, has 12 rainy days

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

Watermelon in Como: 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 Como during the watermelon season

No month of the season averages above the watermelon card's 18–35 °C by day; the warmest, July, averages 27.6 °C. Months that stay below 18 °C even by day on average: October (17.7 °C) and November (11.6 °C). Nights average below 18 °C in May, June and September–November (4.5–16.7 °C).

Month	Day, °C	Night, °C	Rain, mm	Rainy days	Daylight on the 15th
May	20.2	11.7	217	18	14:55
June	25.6	16.7	179	14	15:42
July	27.6	18.6	184	15	15:23
August	27.2	18.7	180	13	14:10
September	22.4	14.5	173	13	12:36
October	17.7	10.4	199	12	11:00
November	11.6	4.5	155	12	9:30

ERA5 2016–2025, Open-Meteo

Watermelon in nearby cities

Around Como, Milan is 17 days earlier and Bellinzona 21 days later.

City	Distance	Date	Difference
Lugano	23 km	29 May – 26 August	same day
Milan	40 km	12 May – 21 August	17 days earlier
Bellinzona	43 km	19 June – 6 August	21 days later
Locarno	46 km	30 May – 13 June	1 day later
Bergamo	47 km	31 May – 9 August	2 days later
Novara	54 km	23 May – 13 August	6 days earlier

Where to buy watermelon plants and seeds near Como

Buy plants ready to set out from 29 May to 14 August (from 8 May to 14 August for an unheated greenhouse); seed for raising your own is sown from 10 April to 17 July. Within 15 km of Como OpenStreetMap lists 22 garden centres, 2 farm-supply shops, 9 plant nurseries, 2 markets and 13 farm shops (collected 27 October 2026).

Azienda Agricola Poma — farm shop
Via Monte San Giorgio 9, 6865 Tremona · 13 km · sites.google.com
Società Agricola La Runa — farm shop
Jun 01–Dec 31 Tue, Thu 15:00–18:30; Sat 08:30–12:30; Sun–Mon, Wed, Fri, public holidays closed; Nov 01–Mar 01 Thu 15:00–18:30; Sat 08:30–12:30; Sun–Wed, Fri, public holidays closed · 11 km · laruna.it
Regina Bianca Bufala di Battipaglia — farm shop
Via Bellinzona 131, 22100 Como · 3 km
I Tesori della Daunia — farm shop
Via Bellinzona 174, 22100 Como · 3 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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