The most common and most likely answer to this crossword clue is the 7 letter word CHOISYA
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Buddy explains!
The straight part
We know that "Latin blossom" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case latin blossom = choisya.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 CHOISYA mean?
CHOISYA noun- Any of the genus Choisya of aromatic evergreen shrubs in the rue family, Rutaceae.