Ultra-competitive plant species


    Invasive non-native plant species, sometimes also referred to as ‘invasive alien species’, is part of plant biosecurity and falls within the remit of the LI Biosecurity Group.

    The topic of invasive non-native species is emotive, as demonstrated by the terms used. It is often specifically associated as an issue with non-natives, whereas the actual problem is ultra-competitiveness in inappropriate locations, regardless of whether the plant is ‘native’ or if the location is a nature reserve or garden. Hence, the LI Biosecurity Group is adopting the broader ‘ultra-competitive’ plants approach.

    The Group is preparing data sheets for specific ultra-competitive plants, starting with Ailanthus. We would welcome other suggestions for the data sheets; if anyone would like to suggest a plant, or prepare a data sheet on their particular favourite troublesome plant, please contact .

    Data sheets

    Other resources

    GB Non Native Species Secretariat (NNSS) website provides a wealth of information  www.nonnativespecies.org/home/index.cfm.  Their role is explained at http://www.nonnativespecies.org/index.cfm?sectionid=46.

    Information on the European Commission List of Invasive Alien Species of Union Concern and associate FAQ document for UK stakeholders is available at http://www.nonnativespecies.org/index.cfm?sectionid=7.

    The EC legislation: http://ec.europa.eu/environment/nature/invasivealien/index_en.htm

    Great Britain Invasive Non-native Species Strategy Aug 2015 UK Govt: available with implementation plan from http://www.nonnativespecies.org/index.cfm?sectionid=55

    Invasive Non-native Species and Wildlife Disease by Joint Nature Conservation Committee http://jncc.defra.gov.uk/page-5150

    IPPC Seminar on Invasive Alien Species: Trends and Patterns of Invasion, Global Impacts, and Possible responses, 29 September 2015: video and presentation available https://www.ippc.int/en/news/the-ippc-seminar-on-invasive-alien-species-trends-and-patterns-of-invasion-global-impacts-and-possible-responses/

    RHS provides succinct, informative and comprehensive information, including the programme for banning the sale of the plants of Union Concern: https://www.rhs.org.uk/advice/profile?PID=530

    http://www.cabi.org/isc/  database compendium of international invasive species, their history, distribution, impact management, (e.g. http://www.cabi.org/isc/datasheet/31580 skunk cabbage)

    http://www.planttracker.org.uk/ app to help track down invasive non-native plant species which are a threat to native wildlife in the UK. – great maps of invasions!

    Wildlife and Countryside Link of UK voluntary organisations http://www.wcl.org.uk/ has a working group on invasives https://www.wcl.org.uk/invasive.asp and news items e.g.  http://www.wcl.org.uk/uk-adopts-eu-legislation-to-tackle-invasive-species.asp

    Water Framework Directive (wfd) UK TAG, alien species: various useful documents: http://www.wfduk.org/tagged/alien-species

    Invasive Non Native Species Horticultural Code of Practice  www.nonnativespecies.org//index.cfm?pageid=299

    Plantlife website includes useful downloads on invasive non-native species http://www.plantlife.org.uk/our_work/campaigns/inns/

    Training courses/providers: http://www.nonnativespecies.org/index.cfm?sectionid=125

    e-learning modules on invasive non-native species, introduction and freshwater plants: http://insight-learning.co.uk/portal.htm


    The NNSS website covers Wales and Scotland as do many of the others above.





    The NNSS website covers Wales and Scotland as do many of the others above.






    Northern Ireland







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