Eastern tree: not entirely gigantic features on it (6)
I believe the answer is:
bonsai
'eastern tree' is the definition.
I don't understand the rest of the clue.
(Other definitions for bonsai that I've seen before include "Dwarf tree found in Bosnia" , "Japanese art of growing dwarf plants" , "Japanese art of growing dwarfed trees" , "Japanese shrub" , "(Cultivation of) dwarf trees" .)