When to plant zucchini in Lucerne: 28 June – 3 August

In Lucerne, zucchini: sow for seedlings from 17 May to 13 July; plant into a greenhouse from 7 June to 3 August; plant out into open ground from 28 June to 3 August. For plants and seeds, the places nearby include Ammann (farm shop, 4 km) and Hofladen Thürig (farm shop, 15 km); addresses and opening hours are below.

Zucchini in Lucerne: soil, season and weather

In Lucerne the soil, not frost, sets the date: the last frost is over around 2 May, but the top 7 cm of soil reaches 18 °C — the minimum on the zucchini card — only around 28 June, 57 days later.

Last spring frost	2 May
Top 7 cm of soil at 18 °C	28 June, 57 days after the last frost
First autumn frost	20 October, 114 days after the start
Days in the bed to the first harvest (card)	36
First harvest, if planted in this window	3 August – 8 September
Days left for picking	78
Daylight	15:46 on 7 June, 15:53 on 28 June
Watering outdoors when fruiting (card)	every 3 days; the driest month, October, has 13 rainy days

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

Zucchini in Lucerne: care after planting

Planted on 28 June: in the first weeks water every 4 days.

Pests and diseases of zucchini to watch for:

Weather in Lucerne during the zucchini season

About 878 mm of rain falls in the season; October is the driest month (134 mm) and July the wettest (215 mm).

Month	Day, °C	Night, °C	Rain, mm	Rainy days	Daylight on the 15th
June	18.2	9.7	177	19	15:53
July	19.3	11.5	215	20	15:33
August	19.4	11.4	192	16	14:16
September	15.4	7.8	160	16	12:37
October	12.1	4.1	134	13	10:57

ERA5 2016–2025, Open-Meteo

Zucchini in nearby cities

All the nearest cities on our list plant zucchini earlier than Lucerne; the closest date is in Bern, 7 days earlier.

City	Distance	Date	Difference
Zurich	41 km	11 June – 30 August	17 days earlier
Bern	66 km	21 June – 17 August	7 days earlier
Basel	79 km	5 June – 3 September	23 days earlier
St. Gallen	90 km	15 June – 1 September	13 days earlier
Fribourg	92 km	21 June – 20 August	7 days earlier
Locarno	105 km	30 May – 6 July	29 days earlier

Where to buy zucchini plants and seeds near Lucerne

Buy plants ready to set out from 28 June to 3 August (from 7 June to 3 August for an unheated greenhouse); seed for raising your own is sown from 17 May to 13 July. Within 15 km of Lucerne OpenStreetMap lists 7 garden centres, 1 farm-supply shop, 1 plant nursery, 16 markets and 37 farm shops (collected 27 October 2026).

Christbaummarkt Nationalquai — market
Nationalquai, 6006 Luzern · 1 km
Wochenmarkt — market
Gemeindehausplatz, 6048 Horw · 3 km
Hofladen Thürig — farm shop
Hundgellen 3, 6205 Eich · Mon–Fri 08:00–19:45; Sat–Sun 09:00–19:00 · 15 km · hofladen-thuerig.ch
Ammann — farm shop
Littauerboden, 6014 Luzern · Mon–Sun 07:00–21:00 · 4 km · feines-vom-bodenhof.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