The most common and most likely answer to this crossword clue is the 6 letter word LILIES
I've seen this crossword clue in The Guardian
L
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Buddy explains!
The straight part
We know that "flowers" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case flowers = lilies.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 LILIES mean?
LILIES noun- Any of several flowers in the genus Lilium of the family Liliaceae, which includes a great many ornamental species.
- Any of several species of herbaceous flower which may or may not resemble the genus Lilium in some way, and which are not closely related to it or each other.
- The flower used as a heraldic charge; also commonly used to describe the fleur-de-lis.
- The end of a compass needle that should point north, traditionally often ornamented with the figure of a lily or fleur-de-lis.
- (usually in the plural) A royal spade in auction bridge.
- The thirtieth Lenormand card, representing calmness and maturity.