Crossword Genius

One bloom came up (5)

Ross

I believe the answer is:

arose

'came up' is the definition.
(I've seen this before)

'one bloom' is the wordplay.
'one' becomes 'a' (a thing is one thing).
'bloom' becomes 'rose' (bloom can mean a flower).
'a'+'rose'='AROSE'

(Other definitions for arose that I've seen before include "Occurred; stood up" , "Followed" , "Came about" , "Happened" , "Became apparent" .)

I've seen this clue in the Sydney Morning Herald.
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