Beet variety (5)
I believe the answer is:
chard
'beet variety' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for chard that I've seen before include "Leafy green" , "Variety of beet with edible leaves" , "Variety of beet with edible white leaf stalks" , "vegetable crop" , "Green vegetable" .)