Plant of Heath genus (5)
I believe the answer is:
erica
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">plant of heath genus</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for erica that I've seen before include "I care (anag) - plant - girl" , "Plant of the heath genus" , "Girl - heather" , "Moorland plant, girl's name" , "Girl's name - I care (anag)" .)