The most common and most likely answer to this crossword clue is the 4 letter word TRUG
T
R
U
G
Buddy explains!

The straight part
We know that "One carries flowers" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case one carries flowers = trug.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 TRUG mean?
TRUG noun- A shallow, oval basket used for gardening
- A trough or tray.
- A hod for mortar.
- An old measure of wheat equal to two thirds of a bushel.
- A concubine; a harlot.