Wattle tree or shrub (6)
I believe the answer is:
acacia
<span class="explanation-format__ClueExplanation">I believe this is a double definition.<br/ ><br/ >'<span class="explanation-format__original">wattle tree</span>' is the first definition.<br/ ><span class="explanation-format__explanation">(I've seen this in another clue)</span><br/ ><br/ >'<span class="explanation-format__original">shrub</span>' is the second definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ ></span>
(Other definitions for acacia that I've seen before include "Wattle genus" , "Garden plant also known as wattle" , "Australian tree" , "Locust tree the false one" , "Plant like wattle" .)