Gardeners and outdoor enthusiasts across the UK are being warned about a dangerous plant that's becoming increasingly common - giant hogweed. This invasive species, which can grow up to five metres tall, contains toxic sap that causes severe skin reactions when exposed to sunlight.
Why is giant hogweed so dangerous?
The plant's sap contains chemicals called furanocoumarins which make skin extremely sensitive to ultraviolet light. Contact can result in:
- Painful burns and blisters within 24-48 hours
- Long-lasting purple scars that may persist for years
- Potential blindness if sap gets in the eyes
How to identify giant hogweed
The plant features:
- Thick green stems with purple blotches and coarse white hairs
- Large, sharply serrated leaves up to 1.5m wide
- White flower heads that can reach 80cm across
What to do if you touch it
If you 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 urging the public to report sightings but not to attempt removal themselves due to the high risk of injury.
