The new Wembley Stadium pitch will be ready for the FA Trophy final on 9 May.
The turf has been re-laid five times since the stadium re-opened in 2007 after a £750m development.
Turfgrass Growers Association chairman Tim Fell blamed the use of the stadium for pop concerts and other events.
"The basic problem is that it's not just being used for football," Fell explained.
"I don't think any other stadium in the world has such a congested programme of events."