Shares a plant (5)
I believe the answer is:
stock
I believe this clue is a double definition.
'shares' is the first definition.
(thesaurus)
'a plant' is the second definition.
(I know this)
(Other definitions for stock that I've seen before include "Neck adornment" , "Goods in store" , "Shares - soup" , "Neckwear; supply" , "Repute" .)