What does the cryptic crossword clue "Land due to turbulence? That's knotty (9)" mean?

The definition is "knotty". The wordplay uses an anagram. anagram of LAND + DUE + TO = NODULATED; definition: "knotty" The answer is NODULATED.

Land due to turbulence? That's knotty (9)

Times Cryptic #28843 | 17 Down | 2024-02-19 flower