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When to plant tomatoes in Ireland: 30 May – 8 August

Tomato in Ireland: plant out into open ground from 30 May to 8 August; the window opens earliest in Waterford 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 moreAthlone2 June – 6 August
210–269 frost-free daysDublin, Cork, Galway, Limerick, Waterford, Kilkenny, Sligo, Tralee, Letterkenny, Dundalk30 May – 8 August

Tomato: the window in each city

CityWindowZone
Waterford30 May – 31 July210–269 frost-free days
Galway31 May – 8 August210–269 frost-free days
Tralee31 May – 2 August210–269 frost-free days
Athlone2 June – 6 August270 frost-free days or more
Limerick2 June – 1 August210–269 frost-free days
Sligo6 June – 1 August210–269 frost-free days
Letterkenny7 June – 8 August210–269 frost-free days
Cork10 June – 1 August210–269 frost-free days
Dublin12 June – 4 August210–269 frost-free days
Dundalk14 June – 31 July210–269 frost-free days
Kilkenny16 June – 31 July210–269 frost-free days