How to correct terrain tree height?

I made a tree and was sure to put the bottom of x and the tree point in the positive y axis as if it was laying on the group, but when I went to paint on trees… Half of the tree was in the ground. Suggestions?

I’m modeling s very basic tree in blender. 2.72, and exporting via .blend to fbx drag and drop

in blender, make sure that the origin of the model is at the base, otherwise you are going to have to deal with offsets. easy way to do this is to

(in object mode in blender)

get the model on the dead center from top down ortho mode (numpad 7 then numpad 5)

then make sure the bottom of the model is resting on the “floor”

then press shift-c then ctrl-alt-shift-c and choose “set origin to 3d cursor”

make sure you hit ctrl-a and apply rotation and scale before you save for unity.

this should work (I hope :P)