 Unfortunately, most methods of removing adult gorse plants, such as burning or bulldozing them, create the ideal conditions for the gorse seeds to germinate and total eradication with current technology seems impossible.Gorse is now one of the most widely recognised agricultural weeds in New Zealand.It covers at varying densities — a total of 5% of the land area of New Zealand when excluding existing indigenous forest, vegetated sub-alpine and alpine areas.. Gorse became New Zealand's most costly weed to control, an estimated $22 million per annum by the early 1980s .