Are these trees LEGO parts? I've come across some trees from some bulk purchases I've made, and I can not determine if these are LEGO or "compatible" parts. Any ideas? The tree on the left is an official tree but the one in the middle is an odd aqua color, and the one to the right is very similar. Neither the middle nor right trees have any LEGO stamps on them anywhere, which is why I'm pretty sure they are from something "compatible" but figured I'd see if anyone else could identify them. My apologies for the photography.
A full list of LEGO tree parts can be found on Bricklink. I'd encourage anybody looking to identify a brick to use the part catalogue.

The two trees on the right are definitely not LEGO parts.