Site workers

Invasive non-native species (INNS) can be easily spread around on clothing and footwear, vehicles and machinery, and in contaminated material such as soil. Some INNS are a particular problem for developers, Japanese Knotweed is infamous for the problems it causes in the urban environment. Educate yourself or others about non-native species, how to identify them and prevent their spread, using the resources below:

Non-native species

Take the introductory module of the e-learning to learn about non-native species and why they are a concern

Take e-learning in biosecurity to find out how to help prevent the spread of non-native species when working on site

Find out more about non-native species using the Non-native Species Information Portal

Identification and recording

Take the identification and recording module of the e-learning for guidance on identification of some key species, and what to do if you seen them on site

Find out how to identify more species by downloading Identification Guides which can be kept on site

Scottish Natural Heritage have developed a booklet: Invasive non-native plants associated with fresh waters - a guide to their identification

Listen to vocal calls of some non-native species


Guidance on practising biosecurity


Control methods for non-native aquatic and riparian plants

Safe disposal of waste plant material

Health and safety



England and Wales

Further training and advice

Find links to training courses and experts

View our recommended reading list

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