Lord Howe Island is an island off the NSW coast which
was declared a World Heritage Area in 1982 in recognition
of its outstanding natural beauty and exceptional biodiversity.
It is however under serious threat from weeds.
Crofton weed (Ageratina adenophora) is one of the two dominant weeds
on Lord Howe Island that has not been included in the eradication program
implemented by the Lord Howe Island Board since 2004.
The extent of its distribution, mainly in non-accessible areas, makes manual
removal and chemical control impractical. Biological control
is believed to be the only viable option to reduce densities of
crofton weed across its range on the island.