Azolla weevil: 100 years of Azolla biocontrol in the UK
Azolla filiculoides is also known as floating water fern or fairy fern. It is a small, aquatic, free-floating fern native to the warm temperate, and tropical regions of the Americas. The species has been introduced around the globe: to Australia, New Zealand, the Caribbean, Hawaii, North and sub-Saharan Africa and Europe. It was first suspected…
Crassula – the potent invasive plant being challenged by a microscopic mite
Crassula helmsii (also known as Australian swamp stonecrop, New Zealand pygmyweed, or crassula) is an aquatic or semi-terrestrial succulent plant. The species was initially introduced to the UK in the early 1900s as an oxygenating pond plant. It originates in Australia and New Zealand, as its common names suggest.
Floating pennywort weevil: feasting to control one of the UK’s most invasive aquatic plants
The floating pennywort weevil (Listronotus elongatus) is the latest biological control method to combat the highly invasive aquatic plant, floating pennywort (Hydrocotyle ranunculoides). CABI’s most recent biological control project, the first small-scale releases of the weevil occurred in late 2021, with a national release and monitoring programme launched in 2022.
Fast-growing kudzu plant overwhelms native species
Kudzu (Pueraria montana var. lobata) has become America’s most infamous weed. The quick-growing creeping vine spreads rapidly, outcompeting native grasses and fully-grown trees.
Garlic mustard threatens the rare West Virginia white butterfly
Garlic mustard (Alliaria petiolate) is a highly destructive invader in North America. As well as hindering the survival of native plants, it poses a particular threat to the survival of the rare West Virginia white butterfly (Pieris virginiensis).
The spotted lanternfly wreaks havoc on crops in Asia and the US
The spotted lanternfly (Lycorma delicatula) is an insect pest of several economically important crop plants. It is also a menace to many fruits including grapes, apricots, apples and cherries.
Halting the spread of highly invasive and destructive Japanese knotweed
Japanese knotweed (Fallopia japonica) is a highly invasive species that is having a devastating impact on native biodiversity and local infrastructure in its introduced range in the UK, Europe, North America and Canada.
How plant hunters sowed the seeds of garden invaders
Plant hunters introduced many of the UK’s most damaging invasive species as botanical status symbols in the Victorian era. Initially, the impact of plant hunting for sought-after specimens, such as camellia and rhododendrons, was largely unknown. However, without natural predators from their home range, these plants grew uncontrollably in British gardens and spread into the…
The life cycle of the invasive apple snail
The Life cycle of the invasive apple snail and its ability to grow and reproduce quickly makes it an incredibly successful invasive species. Invasive apple snail, Pomacea canaliculate, is widely considered one of the most invasive invertebrates of waterways and irrigation systems. The snails are able to spread through irrigation canals, natural water distribution pathways,…
Remote sensing of highly invasive Parthenium weed in Pakistan
Parthenium is a highly invasive plant species. It threatens agricultural productivity, biodiversity, and human and animal health wherever it takes root. In Pakistan, it’s called famine weed because of its devastating impact on crop yields and livelihoods.