Giant Hogweed (Heracleum mantegazzianum) - Detail

Species Detail - Giant Hogweed (Heracleum mantegazzianum) - Species information displayed is based on the dataset "The Flora of County Waterford".

Terrestrial Map - 10km

Distribution of the number of records recorded within each 10km grid square (ITM).

Live Map

Marine Map - 50km

Distribution of the number of records recorded within each 50km grid square (WGS84).

Live Map

Species image

Scientific Name Heracleum mantegazzianum

Common Name Giant Hogweed

Taxon Version Key NBNSYS0000003711 RecommendedWell-formed

Synonyms

Designations Invasive Species: EU Invasive Alien Species Regulation No. 1143/2014 || Invasive Species: Regulation S.I. 477/2011 (Ireland) || Invasive Species: High Risk Invasive Species (2013 Report) || Invasive Species: Regulation S.I. 374/2024 (Ireland)

Abbreviation heman

Authority Sommier & Levier

Group Flowering plant

Rank Species

Number Of Records 13

Number Of 10Km Squares 5

Number Of 50Km Squares 3

Oldest Record 03/05/1997

Newest Record 28/06/2005

Phenology - earliest record (across all datasets) 2 January (recorded in 2018)

Phenology - latest record (across all datasets) 7 December (recorded in 1987)

Species Profiles

Citation Paul R Green, The Flora of County Waterford, National Biodiversity Data Centre, Ireland, Giant Hogweed (Heracleum mantegazzianum), accessed 17 September 2025, <https://maps.biodiversityireland.ie/Dataset/23/Species/29131>

Species Detail - Giant Hogweed (Heracleum mantegazzianum) - Species information displayed is based on the dataset "The Flora of County Waterford".

Terrestrial Map - 10km

Marine Map - 50km

Species image

Records per month (across all datasets)

Records per year (across all datasets)