The more I stare at it the more I like it. I never liked the LttP tree style but this one is quite interesting. It looks a bit like a Venusaur on top.
It's a very creepy sort of tree, though. I see three different faces in the trunk of the tree. I assume it's intentional, but I'll describe anyway. It looks like turtles on either end, and the eyes of the turtles create a sort of octopus face with the center root of the tree. It's a very cool effect. I really like it.
If I were to suggest a change, it would be to darken the leave palette a bit. Right now the shade makes the tree look a bit sickly. The color choice reminds me of the color of sprouts off of a potato when they've been kept in the dark. Though, it does help amplify the creepy effect of the tree.
Second suggestion - the middle root of the trunk is bugging me slightly, because I feel like the twisting roots in the center should have a darker outline between them. It looks strange currently.