XD Just absolutely no idea what was causing the problem. At least if I knew what might be causing it I could devote more time to trying to fix it, but my only idea was that it might be the foreign texture or object conflicted with ogre. Which didn't entirely make sense because I have seen the exact same sakura tree in another map. But now it is entirely pre-existing objects....And it's a totally debilitating bug, I can't do anything with my map until it is fixed unless I want more fir trees. o.o Fir and Oak trees are the only trees that work anymore...
And the strangest thing is that I have plenty of other awkward new objects in my map that show up just fine. I have a flower textured palm tree, and a group of flower-textured dens, and they show up just fine...