The most common and most likely answer to this crossword clue is the 8 letter word OVERGREW
O
V
E
R
G
R
E
W
More clues leading to the result OVERGREW
Buddy explains!

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 OVERGREW mean?
OVERGREW verb- To grow beyond one's boundaries or containment, or beyond the proper size.
- To grow over; (of one thing) to cause (a second thing) to become overgrown (with or by the first thing).