What does the cryptic crossword clue "Carrot-top adhered to mould (7)" mean?

The definition is "Carrot-top". The wordplay uses an anagram. anagram of ADHERED = REDHEAD; definition: "Carrot-top" The answer is Redhead.

Carrot-top adhered to mould (7)

Telegraph Prize Cryptic #3108 | 16 Down | 2021-05-16 flower