Please note that some information on this wiki is still based on the demo version.
If you notice any errors, feel free to correct them.
Trees
From Super Fantasy Kingdom Official Wiki
Trees are a source for 
Wood in Super Fantasy Kingdom.
Usage
Every run there are 15 × Trees spawning naturally. Since every Tree can be harvested 4 times the max. amount of Wood you can get without developing the 
Lumberyard is 60.
While the (Kings boost) is active all Wood carried to the Lumberyard is doubled. So its likely, but not guaranteed to gather more then 32 × Wood.
Source
Depletable
