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When to plant cucumbers in Ireland: 26 June – 13 September

Cucumber in Ireland: plant out into open ground from 26 June to 13 September; the window opens earliest in Tralee and closes latest in Galway (11 cities).

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
270 frost-free days or moreAthlone13 July – 11 September
210–269 frost-free daysDublin, Cork, Galway, Limerick, Waterford, Kilkenny, Sligo, Tralee, Letterkenny, Dundalk26 June – 13 September

Cucumber: the window in each city

CityWindowZone
Tralee26 June – 7 September210–269 frost-free days
Waterford28 June – 5 September210–269 frost-free days
Sligo30 June – 6 September210–269 frost-free days
Limerick6 July – 6 September210–269 frost-free days
Letterkenny7 July – 13 September210–269 frost-free days
Athlone13 July – 11 September270 frost-free days or more
Galway13 July – 13 September210–269 frost-free days
Cork15 July – 6 September210–269 frost-free days
Kilkenny15 July – 5 September210–269 frost-free days
Dublin16 July – 9 September210–269 frost-free days
Dundalk17 July – 5 September210–269 frost-free days