"We've had our forestry team, we've had other consultants, working on this."
He said trees had different attributes when planted in different places.
The other projects which received funding is a native planting programme in Otago and Southland and a national strategy for native tree nurseries to address sector capability and support the success of seedling production as the One Billion Trees programme ramps up.
More than $1 million has been committed to the first three projects, with over $120 million set aside for partnership programmes in the fund.
Forestry Minister Shane Jones said the first partnerships will progress initiatives across science, nursery sector capability and environmental restoration.
"Our aim with this Fund is to create even closer working relationships with partners across New Zealand," Jones said.
"Supporting projects like these are a critical part of achieving our goal and we have some very enthusiastic individuals and organisations ready to help reduce the barriers to tree planting.
"This is about working together, putting our thinking caps on and creating innovative ways of achieving our goal.
"We are a country full of Number 8 wire thinkers and I'm extremely encouraged by these first partnerships.
"We're looking to work with regional councils, sector organisations, environmental NGOs, researchers, training organisations, Maori entities, community groups and other agencies."
The government plans to plant one billion trees by 2028.