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When to plant cucumbers in Switzerland: 29 May – 20 September

Cucumber in Switzerland: plant out into open ground from 29 May to 20 September.

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.

Planting window by climate zone

ZoneCitiesWindow
210–269 frost-free daysZurich, Geneva, Basel, Lausanne, Lugano, Bellinzona, St. Gallen, Neuchâtel29 May – 20 September
150–209 frost-free daysBern, Lucerne, Fribourg, Sion21 June – 22 August
Short season: under 150 frost-free daysLocarno30 May – 8 July

Cucumber: the window in each city

CityWindowZone
Lugano29 May – 20 September210–269 frost-free days
Locarno30 May – 8 JulyShort season: under 150 frost-free days
Basel5 June – 5 September210–269 frost-free days
Neuchâtel6 June – 13 September210–269 frost-free days
Geneva8 June – 2 September210–269 frost-free days
Zurich11 June – 1 September210–269 frost-free days
St. Gallen15 June – 3 September210–269 frost-free days
Bellinzona19 June – 31 August210–269 frost-free days
Lausanne19 June – 5 September210–269 frost-free days
Bern21 June – 19 August150–209 frost-free days
Fribourg21 June – 22 August150–209 frost-free days
Lucerne28 June – 5 August150–209 frost-free days
Sion28 June – 4 August150–209 frost-free days