When to plant zucchini in Bellinzona: 19 June – 29 August

In Bellinzona, zucchini: sow for seedlings from 8 May to 8 August; plant into a greenhouse from 29 May to 29 August; plant out into open ground from 19 June to 29 August. For plants and seeds, the places nearby include Azienda Agricola Gianella (farm shop, 14 km) and Emporio La Stala (farm shop, 14 km); addresses and opening hours are below.

Zucchini in Bellinzona: soil, season and weather

In Bellinzona the soil, not frost, sets the date: the last frost is over around 7 April, but the top 7 cm of soil reaches 18 °C — the minimum on the zucchini card — only around 19 June, 73 days later.

Last spring frost	7 April
Top 7 cm of soil at 18 °C	19 June, 73 days after the last frost
First autumn frost	15 November, 149 days after the start
Days in the bed to the first harvest (card)	36
First harvest, if planted in this window	25 July – 4 October
Days left for picking	113
Daylight	15:26 on 29 May, 15:47 on 19 June
Watering outdoors when fruiting (card)	every 3 days; the driest month, July, has 13 rainy days

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

Zucchini in Bellinzona: care after planting

Planted on 19 June: in the first weeks water every 4 days.

Pests and diseases of zucchini to watch for:

Weather in Bellinzona during the zucchini season

About 1007 mm of rain falls in the season; July is the driest month (128 mm) and October the wettest (221 mm).

Month	Day, °C	Night, °C	Rain, mm	Rainy days	Daylight on the 15th
June	23.7	13.9	187	15	15:45
July	26.2	15.9	128	13	15:26
August	26.2	15.9	184	12	14:12
September	20.9	11.9	153	12	12:36
October	16.7	7.8	221	12	10:59
November	10.8	2.6	134	12	9:28

ERA5 2016–2025, Open-Meteo

Zucchini in nearby cities

All the nearest cities on our list plant zucchini earlier than Bellinzona; the closest date is in Bergamo, 19 days earlier.

City	Distance	Date	Difference
Locarno	17 km	30 May – 6 July	20 days earlier
Lugano	22 km	29 May – 18 September	21 days earlier
Como	43 km	29 May – 6 September	21 days earlier
Bergamo	74 km	31 May – 1 September	19 days earlier
Milan	82 km	12 May – 13 September	38 days earlier
Novara	88 km	23 May – 5 September	27 days earlier

Where to buy zucchini plants and seeds near Bellinzona

Buy plants ready to set out from 19 June to 29 August (from 29 May to 29 August for an unheated greenhouse); seed for raising your own is sown from 8 May to 8 August. Within 15 km of Bellinzona OpenStreetMap lists 1 garden centre, 1 plant nursery and 7 farm shops (collected 27 October 2026).

Hacker — garden centre
13 km
Garden Center Bürgi — plant nursery
3 km
Azienda Agricola Gianella — farm shop
Via Campagna 10, 6556 Leggia · Mon closed; Tue closed; Wed–Sun 09:30–24:00 · 14 km · aziendaagricolagianella.ch
Emporio La Stala — farm shop
Via Cantonale 2, 6805 Mezzovico · 24/7 · 14 km · lastala.ch

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