OTG Version

• 1.12.2_v8_r6

In vanilla, a sapling will not grow if there is not enough available space directly above it (i.e. if there is a block above the sapling). Also, if the tree grows and collides with other blocks it will not replace them.

Saplings grown with OTG's sapling queue do not obey either of these rules, the second is quite important as it prevents sapling growth from destroying player made structures.

I think Josh fixed this?

Fixed by Josh, saplings don't spawn unless all their blocks can spawn.