Tree providing Canada's national emblem (5)
I believe the answer is:
maple
'tree providing canada's national emblem' is the definition.
(I've seen this before)
This is all the clue.
(Other definitions for maple that I've seen before include "Tree; sugar from it" , "----- leaf: symbol of Canada" , "Tree of Acer genus" , "Tree associated with Canada" , "Ample sort of tree" .)