The most common and most likely answer to this crossword clue is the 7 letter word CHAMISO
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Buddy explains!
The straight part
We know that "Flowering shrub" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case flowering shrub = chamiso.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 CHAMISO mean?
CHAMISO noun- An evergreen shrub, Atriplex canescens, found in the southwestern United States.
- An evergreen shrub native to California, Adenostoma fasciculatum.