What does the cryptic crossword clue "Mend site in a messy state in grounds (8)" mean?

The definition is "grounds". The wordplay uses an anagram. anagram of MEND + SITE = SEDIMENT; definition: "grounds" The answer is SEDIMENT.

Mend site in a messy state in grounds (8)

Daily Mail Cryptic #17043 | 16 Down | 2023-02-28 flower