Since I remember building something on top of a planted crop,
I wonder if you could do the same thing with trees.
I'm doing this for aesthetic purposes as i like to plan my settlements around nature instead of ignoring it.
I was thinking that a tree could grow through a building if I quickly pave the ground it was planted on and get the building sign for whatever structure on top of it.
I guess that someone could build a building over a plot of pumpkins, flax or poppy to identify the building somewhat making it more unique.
or hide something using the hide function in enders.
like a single hidden poppy flower.
sorry if this was a secret or something