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