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Complete List of Alien (Non-native) Invasive Plant Species for Ireland

European Communities (Birds and Natural Habitats) Regulations 2011 non-native invasive plant species list...

Common Name

American Skunk-Cabbage

Brazilian Giant-Rhubarb

Broad-Leaved Rush

Cape Pondweed

Cord-Grasses

Curly Waterweed

Dwarf eel-grass

Fanwort

Floating Pennywort

Fringed Water-Lily

Giant Hogweed

Giant Knotweed

Giant-Rhubarb

Giant Salvinia

Himalayan Balsam

Himalayan Knotweed

Hottentot-Fig

Japanese Knotweed

Large-Flowered Waterweed

Mile-a-Minute Weed

New Zealand Pigmyweed

Parrots Feather

Red Alga

Rhododendron

Salmonberry

Sea-Buckthorn

Spanish Bluebell

Three-Cornered Leek

Wakame

Water Chestnut

Water Fern

Water Lettuce

Water-Primrose

Waterweeds

Wireweed

Species Name

Environment

Lysichiton americanus

Gunnera manicata

Juncus planifolius

Aponogeton distachyos

Spartina (all species and hybrids)

Lagarosiphon major

Zostera japonica

Cabomba caroliniana

Hydrocotyle ranunculoides

Nymphoides peltata

Heracleum mantegazzianum

Fallopia sachalinensis

Gunnera tinctoria

Salvinia molesta

Impatiens glandulifera

Persicaria wallichii

Carpobrotus edulis

Fallopia japonica

Egeria densa

Persicaria perfoliata

Crassula helmsii

Myriophyllum aquaticum

Grateloupia doryphora

Rhododendron ponticum

Rubus spectabilis

Hippophae rhamnoides

Hyacinthoides hispanica

Allium triquetrum

Undaria pinnatifida

Trapa natans

Azolla filiculoides

Pistia stratiotes

Ludwigia (all species)

Elodea (all species)

Sargassum muticum

Terrestrial

Terrestrial

Terrestrial

Freshwater

Terrestrial

Freshwater

Terrestrial

Freshwater

Freshwater

Freshwater

Terrestrial

Terrestrial

Terrestrial

Terrestrial

Terrestrial

Terrestrial

Terrestrial

Terrestrial

Freshwater

Terrestrial

Freshwater

Freshwater

Marine

Terrestrial

Terrestrial

Terrestrial

Terrestrial

Terrestrial

Marine

Freshwater

Freshwater

Freshwater

Freshwater

Freshwater

Marine

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

Common name 

Bohemian knotweed

Canadian Waterweed

Cherry Laurel

Chilean Rhubarb

Common Cord grass

Curly Waterweed

Floating Pennywort

Fringed Water-Lily

Giant Hogweed

Giant Knotweed

Himalayan Balsam

Hottentot-Fig

Japanese Kelp

Japanese Knotweed

New Zealand Pigmyweed

Nuttallii  Waterweed

Parrots Feather

Rhododendron

Water-Primrose

Wire Weed

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

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

Common name 

African woodsorrel

American skunk cabbage

Annual bur-sage

Antithamnionella ternifolia

Barberry

Black currant

Brazilian waterweed

Butterfly-bush

Canadian-fleabane

Clover broomrape

Creeping Bellflower

Dead man's fingers

Douglas fir

Early goldenrod

False acacia

Field penny-cress

Garden lupin

Giant rhubarb

Hairy rocket

Himalayan honeysuckle

Himalayan knotweed

Holm oak

Japanese barberry

Japanese honeysuckle

Japanese rose

Leafy spurge

Least duckweed

Montbretia

Narrow-leaved ragwort

New Zealand bur

Ostrich fern

Pampas grass

Pitcherplant

Red oak

Rock cotoneaster

Rum cherry

Russian-vine

Salmonberry

Sea-buckthorn

Sycamore

Three-cornered garlic

Traveler's-joy

Tree of heaven

Turkey oak

Virginia-creeper

Warty cabbage

Water fern

Wild parsnip

Species name 

Oxalis pes-caprae

Lysichiton americanus

Ambrosia artemisiifolia

Antithamnionella ternifolia

Berberis vulgaris

Ribes nigrum

Egeria densa

Buddleja davidii

Conyza canadensis

Orobanche minor

Campanula rapunculoides

Codium fragile ssp. tomentosoides

Pseudotsuga menziesii

Solidago gigantea

Robinia pseudoacacia

Thlaspi arvense

Lupinus polyphyllus

Gunnera manicata

Erucastrum gallicum

Leycesteria formosa

Persicaria wallichii

Quercus ilex

Berberis thunbergii

Lonicera japonica

Rosa rugosa

Euphorbia esula

Lemna minuta

Crocosmia x crocosmliflora

Senecio inaequidens

Acaena ovalifolia

Matteuccia struthiopteris

Cortaderia selloana

Sarracenia purpurea

Quercus rubra

Cotoneaster horizontalis

Prunus serotina

Fallopia baldschuanica

Rubus spectabilis

Hippophae rhamnoides

Acer pseudoplatanus

Allium triquetrum

Clematis vitalba

Ailanthus altissima

Quercus cerris

Parthenocissus quinquefolia

Bunias orientalis

Azolla filiculoides

Pastinaca sativa

Environment 

Terrestrial

Terrestrial

Terrestrial

Marine

Terrestrial 

Terrestrial

Freshwater

Terrestrial 

Terrestrial 

Terrestrial 

Terrestrial 

Marine 

Terrestrial 

Terrestrial 

Terrestrial 

Terrestrial 

Terrestrial

Terrestrial

Terrestrial 

Terrestrial

Terrestrial

Terrestrial 

Terrestrial 

Terrestrial 

Terrestrial

Terrestrial 

Freshwater 

Terrestrial

Terrestrial 

Terrestrial 

Terrestrial 

Terrestrial  

Terrestrial 

Terrestrial 

Terrestrial 

Terrestrial 

Terrestrial

Terrestrial

Terrestrial

Terrestrial 

Terrestrial

Terrestrial 

Terrestrial 

Terrestrial 

Terrestrial 

Terrestrial 

Freshwater 

Terrestrial

Risk score 

14

15

17

15

14

14

17

17

14

17

16

16

15

14

17

17

17

16

17

14

16

14

14

15

14

16

14

15

16

14

14

14

14

14

14

17

14

14

14

15

15

17

17

14

16

15

14

15

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