Declared Cactus like the Brown and White Spined Hudson Pear, Coral Cactus, Riverina Pear, Prickly Pear and Rope Cactus, are on the GNRBA priority weeds list. These cacti spread quickly by a variety of means, outcompete native vegetation and reduce the productive grazing capacity of pastoral lands. With grant assistance from State NRM, Rangelands NRM and local Shires, the GNRBA have undertaken successful and ongoing success with its cactus biological control programs. Managing and distributing host specific cochineal, the GNRBA, participating shires and pastoralists have successfully introduced various cochineal biotypes to 4 major cactus species to date. Species targeted will continue to diversify as the cochineal species becomes available. 

The GNRBA conducts mapping, site inspections and gathers landholder/stakeholder feedback. The GNRBA allocates a substantial portion of its budget to priority declared weed control, however, continues to rely heavily on external funding for extra assistance in the costs associated with the management of priority declared weeds, particularly cactus.