Miniature tree (6)
I believe the answer is:
bonsai
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">miniature tree</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this in another clue)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for bonsai that I've seen before include "Japanese method of growing miniature plants" , "Japanese plant or tree grown in miniature form" , "The art of growing ornamental dwarfed plants" , "Dwarfed ornamental tree or shrub" , "Mini-tree growing" .)