Regarding the determination of the hit of the tree growing on the terrrain

I'm a beginner, but I appreciate your cooperation.

I made a tree that grows with the brush function used in terrain and imported it with maya.
I was able to grow it, but I'm worried about winning.

If it's a capsule collider, it comes with a hit decision, and there's no problem, but the shape of the tree is a little special, so I'd like to make it a close hit decision like a mesh collider.
However, using mesh collider, the tree growing on the terrain will not be hit (on prefabricated basis, it will be hit).
Does it have to be a capsule collider?