- Project plans
- Project activities
- Legislation and standards
- Industry context
Last edited 06 Feb 2018
Poisonous plants and construction
Outdoor work can be hazardous - even with appropriate health and safety policies and risk assessments - if employees do not understand the risks and receive appropriate training to manage their own PPE responsibilities, then they may be putting themselves at increased risk.
The UK has its share of poisonous plants that may cause rashes, illness, and - in rare cases - death. When working in remote locations, or on building sites, make sure to assess the dangers on site, and remove (if possible) any plants that may cause harm to workers. The following plants are poisonous when ingested, but mostly skin irritants.
Plants that are skin irritants:
- Wolf’s Bane: Cases of accidental poisoning are rare, but the plant’s toxins can slow the heart rate, cause upset stomach, and can be fatal. Only handle with gloves.
- Stinging Nettles: A common sight in the UK, nettles have needle-like hairs which penetrate the skin and sting you. It’s accompanied by burning, itching, and rash. Use dock leaves to neutralise and cool the skin.
- Giant Hogweed: This plant grows up to five metres tall (16 feet) along footpaths and riverbanks, and the plant’s sap can cause severe painful burns if it comes into contact with the skin. It will make the skin sensitive to strong sunlight. Wash affected areas with soap and water. The blisters heal slowly and can cause phytophotodermatitis, which flares in sunlight. If you feel unwell after exposure, go to your doctor.
- Thorny Plants: Needles and spines from roses, holly, blackberry bushes, and brambles can cause infections on the skin. If you are stuck by a thorn, remove the thorns and soak the area in warm water. Wear protective gloves around these plants.
|Wolf’s Bane: Photo credit:||Stinging Nettles: Photo credit:|
|Giant Hogweed: Photo credit:||Thorny Plants:Photo credit:|
Plants that are poisonous when ingested:
These plants have leaves, berries, fruit, flowers, sap, or bulbs that can poison you if you eat them or give you a rash if you touch them.
- Poison hemlock
- Lords and ladies
- Deadly nightshade
Photo via VisualHunt.com
- Daffodil Bulbs
Photo via Visualhunt.com
Avoid touching these plants where possible, and do not eat them.
 Find out more
 Related articles on Designing Buildings Wiki
Featured articles and news
When is there a right to light, and what happens if it is obstructed?
What would the nationalisation of economic infrastructure mean for GB?
A new guide to improving value by reducing design error.
We've reached 80,000 page views a day and 10,000 registered users. Why not join them?
A masterplan is a framework within which a location is encouraged to develop or change. Read our introductory article.
New consultation announced on a specialist Housing Court to settle landlord-tenant disputes.
ICE responds to a transport consultation advising the government to make decisions enabling more inclusive cities.
BRE and Loughborough University complete first phase refurbishment of demonstration home.
How the risk of collapse of fibrous plaster ceilings is being addressed in theatres.
If you’re a great writer and have practical experience of the construction industry, it could be you.
Frustrated by long documents or technical jargon? Put off by sign-up forms or costs? Take this 5 min survey to help improve construction knowledge.