Information on common wilding conifer control methods and guidelines for good practice.
How we deal with wilding conifer infestations depends on where they are and on how large and dense the infestation is. We also consider the surrounding environment - and how easy it is to get to the site.
In areas that are easy to access, seedlings and small trees can be pulled out by hand, using tools (such as loppers). Chainsaws may be used for larger trees (by a qualified professional).
Rather than cutting down large trees, it is often better to ‘drill-and-fill’. We drill holes into a tree’s trunk and fill the holes with herbicide. This is a good option on difficult terrain where felling is unsafe.
One of the biggest challenges we have with wilding conifers is that they often grow on remote and mountainous terrain.
We use Helicopters to deliver herbicides known as Aerial Foliar Spray Application (AFSA).
The National Programme is researching control methods and developing guidelines for good practice. These summarise standards expected for safe wilding conifer control.
The guidelines listed below can be found in our Publications page:
We welcome your feedback on these guides. Please email us at wilding.conifers@mpi.govt.nz