The default sets both tree mode and sapling mode to true. I was seeing behavior which produced trees floating over saplings, though that may be because the block under the tree is still grass when the tree pops and the sapling doesn't do an air check to see if it is safe to spawn there so it just forces itself under the tree it seems.
The default sets both tree mode and sapling mode to true. I was seeing behavior which produced trees floating over saplings, though that may be because the block under the tree is still grass when the tree pops and the sapling doesn't do an air check to see if it is safe to spawn there so it just forces itself under the tree it seems.