Do some gardening (4)
I believe the answer is:
weed
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">do some gardening</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 weed that I've seen before include "Unwanted plant - cannabis" , "Marijuana (slang)" , "Hoe to remove it" , "Intrusive plant; weak person" , "Useless plant - useless person" .)