I made some procedural foliage for my trees, but the culling always stays the same no matter what. I’ve tried adjusting my foliage type culling settings, but it does absolutely nothing. 
I’ve searched and searched and all I can find are posts about the foliage tool, no the procedural foliage. As it is now, my trees disappear wayyy too early.
Thanks!
Bump, as I’ve wasted another two hours with no ability to cull. 
It talks about how to set culling distance in the documentation. If you used that and it’s not working it may be a bug.
Whoa, that might be it! I might need to resimulate. Will try this. Thanks so much!
Okay, that was not it. I still cannot adjust culling. All of my foliage fades out very early – how can I prevent this?
adjust the LOD Settings for each static mesh you use as foliage (lod0, lod1 lod 2)…, then also check the culling range in ist properties within the foliage tool.