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 free e-learning on non-native species (external link)
  • Module 1 provides information on non-native species and why they are a concern
Find out more about non-native species using the Non-native Species Information Portal

Identification and recording

Take free e-learning fon non-native species (external link)
  • Module 2 provides guidance on how to identify key non-native species, and what to do if you see them on site
Identification Guides for a range of non-native species, which can be kept on site

Invasive non-native plants associated with fresh waters (PDF) - a guide to their identification, developed by Scottish Natural Heritage

Listen to vocal calls of some non-native species


Take free e-learning on non-native species (external link)
  • Module 3 provides training in biosecurity and how to help prevent the spread of non-native species when working on site
Guidance on practising biosecurity


Control methods for non-native aquatic and riparian plants

Safe disposal of waste plant material

Health and safety


Non-native species legislation for Scotland

Non-native species legislation for England and Wales

Further training and advice

Training courses and experts

Recommended reading list

Thin strip of image show tree trunk and bark