When to plant zucchini in Locarno: 30 May – 6 July

In Locarno, zucchini: sow for seedlings from 18 April to 15 June; plant into a greenhouse from 9 May to 6 July; plant out into open ground from 30 May to 6 July. For plants and seeds, the places nearby include Orto mio (farm shop, 4 km); addresses and opening hours are below.

Zucchini in Locarno: soil, season and weather

In the median year the top 7 cm of soil in Locarno does not reach 18 °C, the minimum on the zucchini card, before August; the date follows the last frost (23 May), and the bed stays cooler than the card asks.

Last spring frost	23 May
First autumn frost	22 September, 115 days after the start
Days in the bed to the first harvest (card)	36
First harvest, if planted in this window	5 July – 11 August
Days left for picking	79
Daylight	14:42 on 9 May, 15:28 on 30 May
Watering outdoors when fruiting (card)	every 3 days; the driest month, September, has 16 rainy days

The same dates in Locarno hold for Cucumber, Bell Pepper, Eggplant, Pumpkin and Watermelon.

Zucchini in Locarno: care after planting

Planted on 30 May: in the first weeks water every 4 days.

Pests and diseases of zucchini to watch for:

Weather in Locarno during the zucchini season

About 1021 mm of rain falls in the season; September is the driest month (156 mm) and June the wettest (239 mm).

Month	Day, °C	Night, °C	Rain, mm	Rainy days	Daylight on the 15th
May	11.1	1	215	20	14:57
June	16.5	6.4	239	21	15:45
July	18.4	8.2	184	20	15:26
August	18.3	8.1	227	18	14:12
September	13.7	4.3	156	16	12:36

ERA5 2016–2025, Open-Meteo

Zucchini in nearby cities

Around Locarno, Milan is 18 days earlier and Bellinzona 20 days later.

City	Distance	Date	Difference
Bellinzona	17 km	19 June – 29 August	20 days later
Lugano	22 km	29 May – 18 September	1 day earlier
Como	46 km	29 May – 6 September	1 day earlier
Novara	81 km	23 May – 5 September	7 days earlier
Milan	85 km	12 May – 13 September	18 days earlier
Bergamo	85 km	31 May – 1 September	1 day later

Where to buy zucchini plants and seeds near Locarno

Buy plants ready to set out from 30 May to 6 July (from 9 May to 6 July for an unheated greenhouse); seed for raising your own is sown from 18 April to 15 June. Within 15 km of Locarno OpenStreetMap lists 5 garden centres, 1 farm-supply shop and 4 farm shops (collected 27 October 2026).

Orto mio — farm shop
Mon–Sun 00:00–00:00 · 4 km
Hacker — garden centre
4 km
Gärtnerei Eisenhut / Parco Bontanico — garden centre
4 km
Floricoltura Saletti — garden centre
15 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