Invasive Species Week 2025

Invasive non-native species are one of the top five drivers of global biodiversity loss. They cost the Northern Ireland economy approximately £150 million a year and can even harm our health. Help us to protect our environment and wildlife by taking part in Invasive Species Week!

Daily Themes

You can follow our daily themes for communications activities, or use your own: 

Monday 12th May: Learn about invasive non-native species

Tuesday 13th May: Check Clean Dry

Wednesday 14th May: Be Plant Wise

Thursday 15th May: Look after pets; Be Pet Wise

Friday 16th May: Record your sightings and volunteer with a Local Action Group

Saturday 17th and Sunday 18th May: Take part in an activity 

Could you host an event? (See our list of ideas )


Social media details

Hashtags: #INNSweek or #getINNSvolved

Facebook: Invasive Species Northern Ireland X: @InvasNI


Invasive Species Week 2025 Events

Monday 12th May

Webinar: Horizon scanning for invasive non-native species: future threats and why prevention is key

Tuesday 13th May

Webinar: Invasive non-native species: why they are a problem and how to help protect your sport and the environment

  • Hosted by the GBNNSS, with speakers from the Angling Trust, British Rowing, Paddle UK and the Royal Yachting Association (RYA).
  • 13:00-14:00, online. 
  • Find out more and register to attend.

Webinar: Invasive Cherry Laurel and it’s harmful impact on the Irish landscape

Wednesday 14th May

Webinar: When species do establish – managing aquatic plant invasions

Webinar: Balsam Bashing for Community Groups

  • Hosted by the National Biodiversity Data Centre, with speakers from Kildare County Council and the Ballymore Eustace Environmental Group
  • 19:00-20:00, online
  • Find our more and register to attend.

Thursday 15th May

Webinar: Invasive herpetofauna in the Caribbean UK Overseas Territories and wider Caribbean Region

Webinar: Introduction to Invasive Species of Ireland

Webinar: Invasive species with a special focus on the Asian Hornet


Friday 16th May

Webinar: INNS on the Tees

Saturday 17th & Sunday 18th May

Saturday 17th May – In person event: Balsam Bash

  • Hosted by the Lough Neagh Partnership at Maghery Country Park
  • 10:00-12:00
  • Contact the Lough Neagh Partnership to get involved: ciara.laverty@loughneaghpartnership.org

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Events happening after Invasive Species Week

Wednesday 28th May – In person event: Balsam Bash

  • Hosted by Armagh, Banbridge and Craigavon Borough Council in collaboration with the NIEA INNS Team
  • Oxford Island National Nature Reserve 
  • 11:00-13:30
  • Contact the Lough Neagh Discovery Centre to book your place: 028 3832 2205

Invasive Species Northern Ireland

Invasive Species Northern Ireland