Plant species Invasive in the British Isles

It has become a severe problem in the bogs of the British Isles crowding out the native plants due to it's high seed production.

An invasive alien spreading in waterways in England and Wales ,while it is diminishing in its native habitat in USA.

one of the world's 100 worst invasive species. The root is strong and invasive and can damage building foundations, roads, paving, and retaining walls. The Wildlife and Countryside Act 1981 made it illegal to spread Japanese knotweed in the UK. Classed as "controlled waste" in Britain, it requires disposal at licensed landfill sites. Other names include: fleeceflower, Himalayan fleece vine, monkeyweed, Huzhang , Hancock's curse, elephant ears, pea shooters, donkey rhubarb.

also, giant cow pansy

native to alpine regions of central and southern Europe

Originally introduced for its nitrogen-fixing ability to enhance the growth rate of crops grown in water like rice has naturalized and can completely cover an infested lake in just a few months of warm weather.

A noxious weed that grows in slow-moving, calm, and stagnant freshwater and forms mats on the water surface.

has created a significant problem in waterways

has begun to exhibit resistance to herbicides

It's aggressive seed dispersal, and high nectar production to attract pollinaters, allows the Himalayan Balsam to outcompete native plants. "Balsam bashing" events are organized by local wildlife trusts to help control it.

A carnivorous plant: Prey ,such as flies, ants, spiders, and moths fall into the pitcher and drown in the rainwater that collects in the base of each leaf.

The common name, "Oxford Ragwort" is because it is believed to have escaped from Oxford Botanic Garden into the wild and grew in the stonework of Oxford colleges.

other names: Bermuda buttercup, African wood-sorrel, Bermuda sorrel, Cape sorrel, English weed, Goat's-foot, Sourgrass, and Soursop)

a flowering plant native of Eurasia