Crossword Genius

Sugar plant (4)

Ross

I think it could be either:

cane

beet

'sugar plant' is the definition.
(I've seen this before)

This is all the clue.

(Other definitions for beet that I've seen before include "Crop plant, sugar source" , "E.g. chard, mangelwurzel" , "Genus of plant with succulent root" , "An edible root plant" , "Root vegetable producing sugar" .)

I've seen this clue in the Evening Standard, The Sun and The Mirror.
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