The most common and most likely answer to this crossword clue is the 10 letter word TIMBERLINE
T
I
M
B
E
R
L
I
N
E
More clues leading to the result TIMBERLINE
Buddy explains!
The straight part
We know that "limit beyond which trees do not grow" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case limit beyond which trees do not grow = timberline.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 TIMBERLINE mean?
TIMBERLINE noun- The height or limit beyond which trees do not grow in mountainous or Arctic regions.