Crossword Genius

So I began making bloomers (8)

Ross

I believe the answer is:

begonias

I'm a little stuck... Click here to teach me more about this clue!

'so i began making bloomers' is the definition.
I can't judge whether this defines the answer.

'so i began making' is the wordplay.
'making' is an anagram indicator.
'so'+'i'+'began'='soibegan'
'soibegan' anagrammed gives 'BEGONIAS'.

Can you help me to learn more?

(Other definitions for begonias that I've seen before include "Nosebag I put on for the flowers" , "O begin as flowers" .)

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