Tree leaves disappear at short distance

I just finished up a palm tree I’ve been working on and imported the mesh into Unity as a single mesh with 3 materials. When I place the tree as a mesh into the scene, it works fine. However, when I attempt to use the terrain tree placer tool I have one big issue.

At a close distance and at certain angles, the fronds of the palm tree simply don’t render.

At a farther distance, other then the weird lighting issues, the fronds appear fine.

However, at a closer distance…

If anyone has any ideas, I’m very much open to them. Thanks.

Is this with Unity 2.x? A bug very similar to this was fixed for 3.0 - if you are using 3.0 then please can you file a bug report (menu: Help > Report A Bug) and state that it may be related to case 358221.

Yes, this is with Unity 3. I’ll be sure to do that.