Invasive plants
Find out how to deal with Japanese Knotweed and Giant Hogweed.
Invasive plants have been introduced, deliberately or accidentally by human activity, to an area where they don't naturally occur.
They may have been transported here a long time ago and be considered 'naturalised', but are still invasive, non-native species.
We don't treat invasive plants on private land.
Main Characteristics
- heart shaped leaves
- red streaks or spots on leaves
- stems that are 2m to 3m tall
Damage caused
Underground stems cause damage to paths, drains and building foundations.
Treatment
- Use a weed specialist
- don't try to dig it out. The plant needs to be completely removed. If you leave any part of the plant it might spread
- Spray it with a herbicide
- Don't put it in your brown bin
Main Characteristics
- large green leaves with jagged edges
- white flowers
- thick bristly stems
- stems up to 5m high
Damage caused
The sap of the plant can cause damage if it touches your skin.
It can cause:
- blistering
- severe sunburn
- sensitivity to sunlight. This can be a lifelong condition.
Treatment
- don't touch the plant and keep children away.
- spray it with a herbicide. Make sure you cover your hands and eyes.
- don't put it in your brown bin.
don't try to remove Giant Hogweed yourself
More Information
Last modified on 20 May 2025
