Salad plant; reprimand (6)
I believe the answer is:
rocket
<span class="explanation-format__ClueExplanation">This clue is a double definition.<br/ ><br/ >'<span class="explanation-format__original">salad plant</span>' is the first definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ >'<span class="explanation-format__original">reprimand</span>' is the second definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ ></span>
(Other definitions for rocket that I've seen before include "It's propelled to a great height by combustion" , "A slangy reprimand or a firework" , "Structure that flies by expelling gases - or a reprimand" , "Space missile" , "that should take off?" .)