Here are some foliage I made in 3dsmax and then put in UE4. Its great fun and educating to
model and to go in depth with the grass and plants. I learned most of the technical bits through futurepoly on youtube.
So if you like to do something simular go here : https://www.youtube.com/watch?v=B4j5tzAIflU.
Unreal is free to play around with so try it out! (: