Giant hogweed (Heracleum mantegazzianum) can grow to over 5 metres. Key features: large compound leaves up to 1.5 metres wide; hollow purple-blotched stem 5–10 cm diameter; large white umbrella-shaped flower heads up to 60 cm across. Do not touch — contact us for a professional assessment.
Giant Hogweed Identification
Identifying giant hogweed — key features and distinguishing characteristics.
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