Scientist who studies plants (8)
I believe the answer is:
botanist
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">scientist who studies plants</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for botanist that I've seen before include "Expert in study of plants and trees" , "To sit ban out for expert in study of plants" , "One studying plants" , "Expert in plant biology" , "Expert on plant life" .)