When placing detail meshes on terrain the plant meshes seem to glide across the ground in the wind rather than waving around their own pivot point. What is making this occur?
I’ve tried editing the meshes that Unity provides and I’ve made my own in 3DS Max with the pivot point centred at the base of the plant but they all behave in the same way.
Based on a forum post I just found, the answer is to paint the vertex color alpha value to match how much the wind should move it.
So at the bottom of your detail mesh, the alpha should be black, and at the top some higher value depending on how much it should sway with the wind.
This seems to be a documentation bug in the Detail Mesh reference page.