The most common and most likely answer to this crossword clue is the 6 letter word RACEME
I've seen this crossword clue in The Times
R
A
C
E
M
E
More clues leading to the result RACEME
- Some enter a cemetery: a bit of a bloomer
- Invitation to compete with your setter — in flower arrangement?
- Cluster in athletics event with yours truly coming last
- People with me get a flower arrangement
- Cluster of flowers, with one caught in lead of red setter
- Run with Brummie’s stalked cluster of flowers
- Flower arrangement for relaxed cream tea? No thanks!
- Flowers in competition provided by yours truly
- Grace men with flowers
- Flowers found in Agra cemetery
Buddy explains!

The straight part
We know that "a bit of a bloomer" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case a bit of a bloomer = raceme.The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.
What does RACEME mean?
RACEME noun- An indeterminate inflorescence in which the flowers are arranged along a single central axis.