Giant Hogweed (Heracleum mantegazzianum) - Detail

Species Detail - Giant Hogweed (Heracleum mantegazzianum) - Species information displayed is based on the dataset "National Invasive Species Database".

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 1011

Number Of 10Km Squares 153

Number Of 50Km Squares 61

Oldest Record 01/01/1956

Newest Record 31/05/2025

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 Collated by the National Biodiversity Data Centre from different sources, National Invasive Species Database, National Biodiversity Data Centre, Ireland, Giant Hogweed (Heracleum mantegazzianum), accessed 01 September 2025, <https://maps.biodiversityireland.ie/Dataset/397/Species/29131>

Species Detail - Giant Hogweed (Heracleum mantegazzianum) - Species information displayed is based on the dataset "National Invasive Species Database".

Terrestrial Map - 10km

Marine Map - 50km

Species image

Records per month (across all datasets)

Records per year (across all datasets)