Cull Distance Volume -> Foliage disappears when i come near?

Hello UE4 Community!
I dont know, maybe its a dumb question but its my first time i work with the “Cull Distance Volume”.
I set all up, that small - big meshes disappear after a distance of X . But when i go now to the ground of my map, you see buildings, signs etc, but the Foliage like the gras, stones and trees are now invisible …

Look on the pictures below for details

Can someone pls help me?

Thank you guys very much!