Invasive Species Week

Invasive non-native species (plants and animals) threaten the survival of native wildlife and our natural ecosystems, cost the economy nearly £2 billion a year, and can even harm our health and interfere with activities we enjoy.

Invasive Species Week is an annual event led by the GB Non-native Species Secretariat (NNSS), in partnership with a wide range of organisations, to raise awareness of invasive non-native species and how everyone can help to reduce their impacts.

Invasive Species Week 2026

Thank you to everyone who took part in Invasive Species Week 2026!

• 189 organisations took part across England, Guernsey, Ireland, the Isle of Man, Jersey, Northern Ireland, Scotland, and Wales.
• At least 81 events were planned, unfortunately some were cancelled or postponed due to the heatwave.
• View links to webinars, blogs, and other resources you might have missed. 

How can I help to reduce the impacts of invasive non-native species?

While Invasive Species Week is over, there are still things that you can do to help.

	Learn about invasive non-native species.
	Find out what you can do to help.
	Find free awareness-raising materials to help spread the word to others.