Increase Terrain Render Distance further than maximum

Hey! So I'm making an ocean islandish thing and I have an island very very far away from the camera, but it's clearly visible, so it's supposed to be a background island. I want to put trees on that island but whenever I do the trees aren't visible in the game view. If I change all the settings in the terrain, increase draw distance to max, billboard distance to max and all that stuff, the trees still don't show. Any way to fix this and show them?