Crossword Genius

Plant that has done real damage (8)

Ross

I believe the answer is:

oleander

'plant' is the definition.
The answer is an example.

'done real damage' is the wordplay.
'damage' indicates anagramming the letters (I've seen 'damaged' mean this).
'done'+'real'='donereal'
'donereal' is an anagram of 'OLEANDER'.

'that has' is the link.

(Other definitions for oleander that I've seen before include "'Adorn eel, badly, with this shrub (8)'" , "bloomer" , "No leader, oddly, for the flowering shrub" , "Evergreen flowering shrub from olden era" , "Flowering shrub from olden era, oddly" .)

I've seen this clue in The Globe and Mail.
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