Procedural foliage not working on imported landscape!

In the pic I have an imported landscape created from 3 tiles, I’ve been trying to use procedural foliage on this imported landscape.  I haven’t been able to get it to work at all.  Any help would be greatly appreciated!

No, collisions have not been set.

Must it have collisions set? How do you place collisions on a tiled landscape!

Does it have collison set?

Foliage relies on collision to know where to place actors. Don’t know much about importing landscapes, but I’m assuming you can set the collision in the external package? ( or if it’s a mesh, in the UE mesh editor ).