Species library · Plants & herbs
Heracleum mantegazzianum
Giant Hogweed is classed as poisonous in the Forage field guide. This page helps you identify it and tell it apart from similar species. It is not a foraging guide. When in doubt, have a find identified by an expert.
If you suspect poisoning, call your local poison control center right away. If someone has trouble breathing, has a seizure or is unconscious, call emergency services. Don't wait for symptoms: with some poisonings they only start hours later. Keep any leftovers of the find, they help identify it.
Usually seen from April to June in the northern hemisphere. Found in Disturbed ground, Waterside, Grassland.
Photo: (c) Nova Patch, some rights reserved (CC BY-SA), uploaded by Nova Patch · iNaturalist
Typical window in the northern hemisphere. The southern hemisphere runs about six months offset.
Giant Hogweed is usually found in Disturbed ground, Waterside, Grassland.
In the Forage app, Giant Hogweed has a full field guide entry with more photos, key features and the species it can be confused with.
Yes. Giant Hogweed is classed as poisonous in the Forage field guide. Do not eat it. If you suspect poisoning, call your local poison control center right away, or emergency services if it is life-threatening.
Giant Hogweed usually appears from April to June in temperate northern regions. The exact timing shifts with latitude, elevation and each year's weather.
Giant Hogweed is usually found in Disturbed ground, Waterside, Grassland.
Forage helps you discover and identify wild plants, but identification is never 100% certain. Many edible plants have toxic lookalikes. Never eat anything you find based only on what this app tells you. Always confirm with a field guide, an experienced forager or a local expert. The season score tells you where to look, too: it’s not a guarantee. Mind conservation law and property rights as well.
Species photos via Wikimedia Commons and iNaturalist · full credits
