Possess way to gather first of ripe crop (7)
I believe the answer is:
harvest
'crop' is the definition.
(I know that crop can be written as harvest)
'possess way to gather first of ripe' is the wordplay.
'possess' becomes 'have' (synonyms).
'way' becomes 'st' (abbreviation for street).
'to gather' indicates putting letters inside.
'first of ripe' becomes 'r' (1st letter of 'ripe').
'have'+'st'='havest'
'havest' placed around 'r' is 'HARVEST'.
(Other definitions for harvest that I've seen before include "Crop gathering" , "Process of gathering mature crops" , "Time to gather the crops" , "Crop-gathering time" , "reap rewards" .)