One whose business is blooming? (6)
I believe the answer is:
grower
'one' is the definition.
Although both the answer and definition are singular nouns, I can't understand how one could define the other.
I can't explain the rest of the clue.
Can you help me to learn more?
(Other definitions for grower that I've seen before include "Produce provider" , "One cultivating plants" .)