HONOLULU - Honolulu's urban core could get cooler if a new plan takes root.

In a conference at the Ala Wai Golf Course Friday, Mayor Kirk Caldwell laid out a path for landscape architects, community groups and developers to start planting more trees and grow an urban forest over Honolulu.

About one quarter of Honolulu's urban core is covered by tree canopy. The plan is to increase that by 10 percent within 18 years.

Ian Shears is credited with helping develop a forest around the city of Melbourne.

"Change occurs all the time in a city. Growth, intensification, etc... but how you go about that undertaking that change, if you guide it from a green infrastructure perspective, you'll confer all of the benefits that can be to the city and make it a much more livable place for people," Shears said. 

"In a place where it is getting warmer, in a place where we are losing our tree canopy, if we're going to connect with each other and be better as a community, we need to do this and I think the community is going to get on board with it too," Caldwell said.

The conference was organized by Trees for Honolulu's Future and has a goal of obtaining a 35 percent canopy cover in urban Honolulu.     

Caldwell's goal is to plant 100,000 new trees by 2025.