Shows up again to harvest several of these sweet fruit (9)
I believe the answer is:
reappears
'several of these sweet fruit' is the definition.
The definition suggests an adverb but the answer is not.
'shows up again to harvest' is the wordplay.
'shows up again' becomes 'pears' (I can't justify this - if you can you should give a lot more credence to this answer).
'to' says to put letters next to each other (I've seen this in other clues).
'harvest' becomes 'reap' (synonyms).
'pears' put after 'reap' is 'REAPPEARS'.
Can you help me to learn more?
(Other definitions for reappears that I've seen before include "Develops again" , "Returns" , "Comes back" .)