A bloomer from Cilla? (5)

I believe the answer is:

lilac

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

'a bloomer' is the definition.
I can't tell whether this defines the answer.

'from cilla?' is the wordplay.
'from' is an anagram indicator (the anagram comes from the same letters).
'cilla' is an anagram of 'LILAC'.

Can you help me to learn more?

(Other definitions for lilac that I've seen before include "Fragrant, pale purple flower" , "I call (anag)" , "Lavender colour" , "Shrub or small tree with fragrant blossom" , "Fragrant,purple flower" .)

I've seen this clue in the Evening Standard.

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