Bonsai

Bonsai is a tree or shrub that has been dwarfed, as by pruning the roots and pinching, and is grown in a pot or other container and trained to produce a desired shape or effect.

Differently from other trees, this object can't be chopped. Beavers, lumberjacks and termites are hostile towards it. This object is flammable, getting the flaming adjective when in contact with fire. The botanist is curious towards it, and the landscaper will start spawning leaves when he gets close to it.