Dwarfed ornamental tree or shrub (6)
I believe the answer is:
bonsai
<span class="explanation-format__ClueExplanation">I believe this clue is a double definition.<br/ ><br/ >'<span class="explanation-format__original">dwarfed ornamental tree</span>' is the first definition.<br/ ><span class="explanation-format__explanation">(I've seen this in another clue)</span><br/ ><br/ >'<span class="explanation-format__original">shrub</span>' is the second definition.<br/ ><span class="explanation-format__explanation">(I have seen 'Japanese shrub' mean 'bonsai' so perhaps 'shrub' could also mean 'bonsai')</span><br/ ><br/ ></span>
(Other definitions for bonsai that I've seen before include "Japanese craft of growing miniature trees" , "Dwarf tree cultivation" , "Art of dwarfing shrubs" , "Japanese method of cultivating miniature trees" , "Japanese art of growing miniature trees" .)