The most common and most likely answer to this crossword clue is the 9 letter word SHRUBBERY
I've seen this crossword clue in Financial Times
S
H
R
U
B
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More clues leading to the result SHRUBBERY
Buddy explains!

The straight part
We know that "growth" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case growth = shrubbery.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 SHRUBBERY mean?
SHRUBBERY noun- A planting of shrubs; a wide border to a garden where shrubs are thickly planted; or a similar larger area with a path winding through it.
- Shrubs collectively.