Blossom's support (4)
I believe the answer is:
stem
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">blossom's support</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 stem that I've seen before include "Restrain - staunch - supporter" , "Main upright of a ship's bow" , "branch of family" , "Stop; stalk; ship's timber" , "Slender upright part, of flower or wineglass" .)