Draw distance for trees

[Crowsinger]

Hello. I have a small island, 256x256, and there aren't that many trees on it. But the draw distance for trees is smaller than the island, so it's very disconcerting to see trees pop in on the island. I found where to change the distance for grass, but I couldn't find something like that for trees. How could I change the draw distance to be sure all trees 256m away are drawn?

 

Thank you