Toronto's BMO field, home to Toronto FC, will replace its artificial turf with a grass playing surface by the time the club begins its 2010 season.
Toronto council approved the switch last week, but the project needed the approval of both the federal and Ontario governments, which have paid for part of the construction of the $74-million stadium in 2007.
Mayor David Miller announced Friday that both governments have now given the project the green light.
Maple Leaf Sports and Entertainment, which owns Toronto FC and manages the city-owned field, is investing $3.5 million to replace the turf.
None of the three levels of government is kicking in any of its own money.
As part of a deal reached with the three levels of government, MLSE will also spend $1.2 million on a winter-proof bubble at Allan Lamport stadium and $800,000 on another soccer field covered with artificial turf.