The most common and most likely answer to this crossword clue is the 6 letter word ORCHID
I've seen this crossword clue in The Times
O
R
C
H
I
D
More clues leading to the result ORCHID
- Killer at sea concealed bloomer
- Men rebuked for bloomer
- Monster concealed flower
- Plant soldiers concealed outside entrance to camp
- Bloomer malevolent beast covered up
- Tolkien’s monster concealed flower
- Plant buried by huge mammal
- Showy thing from church, wearing Dior creation
- Plant fruit trees here? One for middle of park
- Flower kept by porch ideally
Buddy explains!

The straight part
We know that "bloomer" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case bloomer = orchid.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 ORCHID mean?
ORCHID noun- A plant of the orchid family (Orchidaceae), bearing unusually-shaped flowers of beautiful colours.
- A light bluish-red, violet-red or purple colour.
- (colour) having a light purple colour.