Shrubs and trees
A poisonous shrub that grazing stock will avoid, therefore reducing available grazing land.
Originally from South Africa Boneseed is named due to the white, bone-like appearance of its seeds.
Buddleia often forms in riverbeds which can alter water flow, causing silt build-up and flooding.
Forms dense mats that shade out native species and is extremely toxic to farm animals.
Produces a large number of seeds that are spread by birds to form dense stands which prevent native species from establishing.
A single straight trunk with leaves that are fan-shaped and divided into narrow leaflets.
A fast growing tree, rapidly maturing and producing a lot of seeds that are released in late summer.
Waves flush sand from underneath the tree roots causing erosion and creating steep dune slopes.
Has masses of shining red or orange berries and matures very quickly to form dense stands.
Shoots snap with an audible crack, hence the name ‘crack’ willow.
Named after Charles Darwin – who discovered it in South America in 1835. It was brought to New Zealand for hedging.
Originally introduced as a hedge to contain stock and provide a wind break.
Can reach 30m in height. It's flowers have a fragrant smell and hang in droopy clusters.
Evergreen, spiny shrub which spreads to form dense thickets and produces orange berries.
Large, very prickly, woody, evergreen shrub growing up to 2-4m.
A deciduous shrub or small tree, spreading or thicket forming with suckering roots and smooth bark.
Popular as a hedging plant due to its hardy nature and exceptionally fast growth rate.
Produces many seeds that are well dispersed by birds and possibly possums.
A wide spreading deciduous hardwood tree found throughout the Bay of Plenty.
Kauri dieback disease is both incurable and fatal in kauri trees - potentially threatening the existence of whole kauri forests.
Considered one of the world’s worst invasive weeds, Lantana seeds can be deadly if eaten.
An evergreen tree with smooth bark and whitish flowers which are followed by bunches of berry-like fruit.
Phoenix palm (Self-propagated)
The Phoenix palm can grow up to 18m tall with sharp spines and originates from the Canary Islands.
Leaves are big paddle-like structures, fleshy and heavy with spikes dotted over them.
Gets its name from the widespread (incorrect) belief that the plant is used to make rice paper.
Grows rapidly and produces a large number of seeds, which birds eat and disperse widely.
Native to Australia where, even in its native habitat, it is considered a pest of some coastal areas.
The Taiwan cherry crowds out neighbouring plants and shrubs and dominates a habitat.
All parts of the tree have a strong smell similar to peanuts or cashew nuts.
Tree Privet is found in coastal and lowland forests, shrubland, cliffs and coastline.