top of page
SPECIES TO WATCH FOR
DSCN0331.JPG
Parrot's Feather  Myriophyllum aquaticum
Introduced. Not assessed.

This is one of the numerous species on the National Pest Plant Accord (NPPA) list which bans the sale of this potentially invasive species. However, of the sixteen regions with pest management plans it is only classed as a pest in eight, one of which is not Horizons. It is not considered a pest in this area.

This is a plant of mainly freshwater but can tolerate slightly saline estuarine conditions. Can grow in water up to 2 m in depth with the feathery growth protruding around 10 cm above water.

Once established it can form large mats which can reach a stage where it chokes or shades waterways which can cause serious problems for native species. Fragments can be water dispersed.

Weedbusters-Parrot's Feather


iNaturalist-Parrot's Feather
parrots feather
P1010009.JPG
Field Horsetail  Equisetum arvense
Introduced. Not assessed.

This invasive species has the potential to become a problem. How to deal with this species is given in the link below which covers the issue in great detail.

It is a relative of the ferns and is easily distinguished by its up-right, feathery green foliage. Can form pure strands which crowd out other species, and these can be quite extensive. It is toxic to stock so can become quite a problem in pasture.

Apart from dry ground, it thrives in almost all types of damp ground such as roadsides, gardens, riverbeds and pasture. Very rarely seen at the beach and dunes but worth keeping an eye out for it.

They are reputed to produce spores infrequently but are spread but are spread by root fragments through disturbance.

Horizons Regional Council-Weeding out Field Horsetail
field horsetail
bottom of page