Common flower (5)
I believe the answer is:
daisy
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">common flower</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for daisy that I've seen before include "Grassland plant" , "Composite" , "chain, just the smallest bit?" , "Grassland flower" , "Common wildflower" .)