Botanical climber (4)
I believe the answer is:
vine
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">botanical climber</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this in another clue)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for vine that I've seen before include "Plant bearing grapes" , "Climbing fruiting plant" , "Bearer of grape" , "Woody-stemmed climber" , "Source of the grape" .)