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When to plant cucumbers in Belgium: 30 May – 15 September

Cucumber in Belgium: plant out into open ground from 30 May to 15 September; the window opens earliest in Hasselt and closes latest in Bruges (10 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
210–269 frost-free daysBrussels, Antwerp, Ghent, Liège, Charleroi, Namur, Mons, Bruges, Leuven, Hasselt30 May – 15 September

Cucumber: the window in each city

CityWindowZone
Hasselt30 May – 3 September210–269 frost-free days
Antwerp31 May – 7 September210–269 frost-free days
Ghent31 May – 9 September210–269 frost-free days
Leuven31 May – 7 September210–269 frost-free days
Liège4 June – 4 September210–269 frost-free days
Brussels8 June – 7 September210–269 frost-free days
Charleroi10 June – 31 August210–269 frost-free days
Mons10 June – 4 September210–269 frost-free days
Namur11 June – 31 August210–269 frost-free days
Bruges15 June – 15 September210–269 frost-free days