Bitter moan about plant in garden (10)

I believe the answer is:

montbretia

'plant in garden' is the definition.

'bitter moan about' is the wordplay.
'about' indicates anagramming the letters.
'bitter'+'moan'='bittermoan'
'bittermoan' is an anagram of 'MONTBRETIA'.

(Another definition for montbretia that I've seen is " destroyed plant".)

I've seen this clue in The Telegraph.

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