When to plant cucumbers in Lausanne: 19 June – 5 September

In Lausanne, cucumber: sow for seedlings from 1 May to 8 August; plant into a greenhouse from 29 May to 5 September; plant out into open ground from 19 June to 5 September. For plants and seeds, the places nearby include La Motte (farm supply, 3 km) and La Ferme du Goupil (farm supply, 8 km); addresses and opening hours are below.

Cucumber in Lausanne: soil, season and weather

In Lausanne the soil, not frost, sets the date: the last frost is over around 12 April, but the top 7 cm of soil reaches 18 °C — the minimum on the cucumber card — only around 19 June, 68 days later.

Last spring frost	12 April
Top 7 cm of soil at 18 °C	19 June, 68 days after the last frost
Into an unheated greenhouse	29 May – 5 September; May outside: 7.6 °C at night, 15.6 °C by day; card 18–25 °C
First autumn frost	20 November, 154 days after the start
Days in the bed to the first harvest (card)	34
First harvest, if planted in this window	23 July – 9 October
Days left for picking	120
Daylight	15:15 on 22 May, 15:50 on 19 June
Watering outdoors when fruiting (card)	every 2 days; the driest month, August, has 12 rainy days

The same dates in Lausanne hold for Bell Pepper, Eggplant, Zucchini, Pumpkin and Watermelon.

Cucumber in Lausanne: care after planting

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

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

26 June — feed: nitrogen

Pests and diseases of cucumber 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 Lausanne during the cucumber season

No month of the season averages above the cucumber card's 18–35 °C by day; the warmest, July, averages 22.7 °C. Months that stay below 18 °C even by day on average: October (13.9 °C) and November (7.8 °C). Nights average below 18 °C in every month of the season, from 2.8 °C to 15 °C.

Month	Day, °C	Night, °C	Rain, mm	Rainy days	Daylight on the 15th
June	20.9	12.9	148	16	15:48
July	22.7	14.8	144	15	15:29
August	22.7	15	131	12	14:14
September	18.4	11.8	140	14	12:36
October	13.9	7.8	134	12	10:58
November	7.8	2.8	148	15	9:26

ERA5 2016–2025, Open-Meteo

Cucumber in nearby cities

Around Lausanne, Neuchâtel is 13 days earlier and Sion 9 days later.

City	Distance	Date	Difference
Fribourg	50 km	21 June – 22 August	2 days later
Geneva	52 km	8 June – 2 September	11 days earlier
Neuchâtel	57 km	6 June – 13 September	13 days earlier
Sion	65 km	28 June – 4 August	9 days later
Annecy	78 km	19 June – 30 August	same day
Bern	79 km	21 June – 19 August	2 days later

Where to buy cucumber plants and seeds near Lausanne

Buy plants ready to set out from 19 June to 5 September (from 29 May to 5 September for an unheated greenhouse); seed for raising your own is sown from 1 May to 8 August. Within 15 km of Lausanne OpenStreetMap lists 5 garden centres, 4 farm-supply shops, 5 plant nurseries, 19 markets and 58 farm shops (collected 27 October 2026).

L'Apothèque du Jorat — plant nursery
Chemin des Planches 11, 1083 Mézières VD · 14 km · apothequedujorat.ch
La Ferme du Goupil — farm supply
Route de Faraz 7, 1302 · Mon–Sun 08:00–17:30 · 8 km · lafermedugoupil.ch
La Motte — farm supply
Chemin de Rennier 44, 1009 Pully · 3 km · la-motte.ch
Charles Cuénoud S.A. — farm supply
Chemin de Courseboux 11, 1096 Cully · 8 km · cuenoud.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.

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