Alligator weed
Alternanthera philoxeroides
Status:
Potential
Habitat:
Freshwater
Threats:
Chokes up riverine habitats when it becomes established
Asian hornet
Vespa velutina
Status:
Potential
Habitat:
Terrestrial
Threats:
A highly aggressive predator of native insects, posing a significant threat to honey bees and other pollinators.
Asian rapa whelk
Rapana venosa
Status:
Potential
Habitat:
Marine
Threats:
Serious implications for marine bivalve survival.
Brown Bullhead Catfish
Ameiurus nebulosus
Status:
Potential
Habitat:
Freshwater
Threats:
Negative impacts on native fish species.
Chinese mitten crab
Eriocheir sinensis
Status:
Potential
Habitat:
Freshwater
Threats:
Threatens ecosystem functioning and protected species.
Citrus Longhorn Beetle
Anoplophora chinensis
Status:
Potential
Habitat:
Terrestrial
Threats:
Detrimental impacts on trees.
Common Milkweed
Asclepias syriaca
Status:
Potential
Habitat:
Terrestrial
Threats:
Overwhelming valuable habitats such as grasslands, dune areas and river valleys.
Eastern baccharis
Baccharis halimifolia
Status:
Potential
Habitat:
Terrestrial
Threats:
The shrub can grow into dense impenetrable thickets that choke all other native vegetation. EU Species of Union Concern.
Fanwort
Cabomba caroliniana
Status:
Potential
Habitat:
Freshwater
Threats:
Competition with native species. Clogging of waterways. EU Species of Union Concern
Invasive Species Ireland

Invasive Species Ireland