"We have yet to work on the final figures, but clearly areas like Queenstown that have the capability and organisation will be the first to get money, but we have to spend it wisely and not ramp it up in a way that falls over."
He said the Government planned to create hundreds of jobs through the funding.
Saunders indicated high living costs in Queenstown historically dissuaded Kiwis from taking wilding-control jobs, but the minister suggested prices could fall in coming months.
National Wilding Control Programme manager Sherman Smith said removing these invasive trees protected against wildfires and reduced threats to rivers.
"We are not against trees; it is about the right tree in the right place.
"They spread out surprisingly quickly, so loss of native species, biodiversity, they also take up a lot more water.
"We have the opportunity to protect those areas that are uniquely New Zealand, which people come to see as a tourist and to create jobs in the process, so it is a bit of a win-win."