Non-native Invasive Plant Species Information

High Risk / Impact Species

In addition to the European Communities (Birds and Natural Habitats) Regulations 2011 - Annex 2 (Part 1) list, Biodiversity Ireland also maintains a list of 'non-native' alien invasive species, classifying the risk and impact posed by non-native species in Ireland as 'high risk / impact' and 'medium risk / impact' together with an additional 'watch list'. Click here to learn more about Biodiversity Ireland's assessment process.

 

Japanese Knotweed Killers have conducted extensive research and collected detailed information to produce guides for all non-native plant species introduced accidentally or deliberately into the wild where they are not normally found. 

 

Non-native invasive species often out compete native species for natural resources causing adverse impacts on the environment.

 

Alien invasive species can also have significant impacts on conservation and economic interests and may in some cases pose threats, directly or indirectly, to human safety.

 

Reversing the damage of invasive species is a significant land management issue for public authorities as well as for private landowners and can be a costly and labour intensive exercise.

 

Is Having An Alien Invasive Species On My Property Illegal?

Generally having any invasive species listed under annex 2 of the S.I. No. 477/2011 - European Communities (Birds and Natural Habitats) Regulations 2011, on your property does not break the law. However, removing it and preventing contamination of neighbouring properties is the owner's responsibility.

 

Allowing any recognised (currently 35 - see below) invasive species to spread outside your property is another matter.... You could be liable for damages, legal costs and remedial costs if you allow an invasive species onto your neighbour's property or public / local authority area.

What are High Risk / Impact Alien Invasive Plant Species?

Non-native plant species subject to restrictions under EC Regulations 49 and 50

 

Click on a species from the following list to find out more

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Species Common Name - Scientific Name

PDF

Record A Sighting

Non-Native Plant Species identified as High Risk on Ireland's Biodiversity List...

Species name 

Fallopia x bohemica

Elodea canadensis

Prunus laurocerasus

Gunnera tinctoria

Spartina anglica

Lagarosiphon major

Hydrocotyle ranunculoides

Nymphoides peltata

Heracleum mantegazzianum

Fallopia sachalinensis

Impatiens glandulifera 

Carpobrotus edulis

Undaria pinnatifida

Fallopia japonica

Crassula helmsii

Elodea nuttallii

Myriophyllum aquaticum

Rhododendron ponticum

Ludwigia grandiflora

Sargassum muticum

Environment 

Terrestrial

Freshwater

Terrestrial

Terrestrial

Marine

Freshwater

Freshwater

Freshwater

Terrestrial

Terrestrial

Terrestrial

Terrestrial

Marine

Terrestrial

Freshwater

Freshwater

Freshwater

Terrestrial

Freshwater

Marine

Risk score 

20

19

18

19

18

19

21

20

19

18

18

19

19

20

20

19

20

20

20

18

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