What does it look like?
Why is it dangerous?
Handling the parsnip plant, which grows wild and is cultivated in gardens and allotments, may make your skin very sensitive to light, leading to burning, blisters and a painful rash.
The plant’s sap contains chemicals called furoumarins. These chemicals are absorbed by the skin and can then react with sunlight, causing skin inflammation.
How can I avoid it?
Watch out for wild parsnip plants in roadside ditches and along railway tracks.
What to do if I come into contact with it?
If you develop skin irritation or blisters after touching parsnip plants, consult your doctor.
The Royal Horticultural Society website has advice on how to keep your family safe from potentially harmful garden plants. You can also call its helpline on 0845 260 8000, from 10am to 12.30pm and 1.30pm to 4pm.