Tree maximum number

[Duruka]

I am working on a large forest map, and am at the maximum number of trees while not being even close to done my map. Is there anyway to increase the maximum number of trees? Thanks in advance

 

[PlasmaBear]

I'm pretty sure that the maximum number of trees are increased in World Editor Unlimited.
Here you go.

 

[reason 3]

Just get Newgen Editor and disable limits.