Fruit finally ready for picking? Rubbish (5)
I believe the answer is:
tripe
'rubbish' is the definition.
('tripe' can be a synonym of 'rubbish')
'fruit finally ready for picking?' is the wordplay.
'finally' suggests the final letters.
'ready for picking?' becomes 'ripe' (I've seen this before).
The final letter of 'fruit' is 't'.
't'+'ripe'='TRIPE'
(Other definitions for tripe that I've seen before include "Pants" , "What some northerners eat" , "load of rubbish?" , "Rubbish; stomach as food" , "Junk; food" .)