A four-year survey of a legal garden waste dump site in a dune system shows how common garden refuse contributes to the weed problem around the country.
Weed control on Northland's largest offshore island nature reserves, the Poor Knights Islands and Hen & Chicken Islands protects the islands' high natural values.
Submerged weeds such as hornwort break into small fragments that get stuck on boats, boating gear, and fishing nets and then get carried around the country.
DOC "Weed Hunters" wage war with mothplant on Cuvier Island, where the invader is gradually smothering anything beneath it.
This pretty yet dangerous plant is threatening to take over lakes, wetlands and waterway margins.
Weed surveillance of Rangitoto Island in a helicopter assisted in finding populations of new invasive weed species at a stage when eradication or containment is still possible.
Find out how a major weeding exercise at Huramua Reserve, in the Hawke's Bay region, is helping to keep safe the nationally endangered shrub Pittosporum obcordatum.
Wellington's Lake Papaitonga was rescued from the perils of purple loosestrife thanks to DOC's secure surveillance programme and the help from members of the public, and staff from the regional council.
Sixty keen volunteers joined in an amazing effort that removed 15,990 trees over the two days from the Hen Roost Basin on the Mataura Range.
Find out how the local community helps to control invasive weeds such as Chilean flame creeper at Otanomomo Reserve.
Intermediate School student Hugh Mckenzie's award-winning science project showed that dirty vehicles could be spreading weeds into reserves.
DOC publications about weeds
Weed surveillance SOP (PDF, 662K) DOC's weed surveillance standard operating procedure
The value of conservation
Check out the Weedbusters website: www.weedbusters.co.nz
Learn more