Britons are being urged to stay vigilant after warnings about Giant Hogweed, one of the UK's most hazardous plants, which can cause agonising burns and even permanent scarring.
The invasive species, scientifically known as Heracleum mantegazzianum, has been spotted across the country, particularly near riverbanks and wasteland. Its sap contains toxic chemicals that react with sunlight, leading to severe skin blisters and long-term sensitivity.
Why is Giant Hogweed so dangerous?
Contact with the plant's sap can trigger phytophotodermatitis, a painful condition where skin becomes extremely sensitive to UV light. Symptoms include:
- Painful blisters forming within 48 hours
- Purple or black scars that may last for years
- Long-term sunlight sensitivity in affected areas
How to identify Giant Hogweed
The plant can grow up to 5 metres tall and features:
- Thick green stems with purple blotches
- Large, jagged leaves up to 1.5m wide
- White flower heads resembling giant cow parsley
What to do if you touch it
If you accidentally come into contact with Giant Hogweed:
- Wash the affected area immediately with soap and cold water
- Avoid sunlight for at least 48 hours
- Seek medical advice if blisters develop
Environmental agencies are working to control the spread of this dangerous plant, but public awareness remains crucial for prevention.
