UNWANTED SPECIES HAVE BEEN INTRODUCED FROM OTHER COUNTRIES
We tend to forget that taking plants from one country to another can rarely be done with impunity. Both Northern Ireland and other countries have accidentally acquired unwelcome visitors which arrived through their exchange of material. The list below gives examples of some foreign plants introduced to Northern Ireland which have escaped into the wild and can cause severe problems. Click on the botanical name to view species pages.
Some examples:
BOTANICAL NAME COMMON NAME
Acaena ovalifolia Pirri-pirri burr
Acer pseudoplatanus Sycamore
Aegopodium podagraria Ground elder
Epilobium brunnescens New Zealand willowherb
Fallopia japonica Japanese knotweed
Heracleum mantegazzianum Giant hogweed
HippophaŽ rhamnoides Sea buckthorn
Hydrocotyle ranunculoides Floating pennywort
Impatiens glandulifera Himalayan balsam
Prunus laurocerasus Cherry-laurel
Rhododendron ponticum Rhododendron
Non-botanical species
Artioposthia triangulata New Zealand flatworm
 
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