The habitats where hemlock water-dropwort~(Oenanthe crocata) grows:

Brownfield
Coastal floodplain grazing marsh
Hard cliff and cliff slope
Limestone pavement
Lowland fen
Nutrient rich eutrophic lake
Reedbed
Salt marsh
Turlough and fluctuation mere
Upland rush pasture
Upland spring flush
Wet woodland