Crossword Genius

One left rusticated arrangement of flowers in grief (4,5)

Ross

I think it could be either:

Which length description are you looking for?:

4

4,5

tear ducts

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'flowers in grief' is the definition.
I know nothing about this answer so I cannot tell whether this works.

'one left rusticated arrangement' is the subsidiary indication.
'one' becomes 'i' (Roman numeral).
'left' is a deletion indicator.
'arrangement' indicates an anagram.
'rusticated' with 'i' taken out is 'rustcated'.
'rustcated' is an anagram of 'tearducts'.

'of' is the link.

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I've seen this clue in The Guardian.
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