New dynamic vegetation around static vegetation

How can I modify this:

It looks unrealistic because the occlusion patch is perfectly around the bounding box. If I modify the “padding” using the vegetation layer block for static objects then I can only make the occlusion patch a bigger square. I can’t modify it to make it smaller.

Ideally it would use the collision mesh to signal the occlusion area. However, I understand that physx is not integrated into the vegetation manual painting system yet.

I could use the dynamic vegetation to instance slices which have the tree mesh with the physx collider but I don’t want the tree to be dynamic. And I’m not sure if the wind bending effects works doing it that way. Most importantly I want my trees to be static. And I’d much rather paint them on the terrain instead of having to rely on gradients.