Iron gate I repaired in spring (9)
I believe the answer is:
originate
'in spring' is the definition.
(I've seen this before)
'iron gate i repaired' is the wordplay.
'repaired' indicates an anagram.
'iron'+'gate'+'i'='irongatei'
'irongatei' anagrammed gives 'ORIGINATE'.
(Other definitions for originate that I've seen before include "Launch" , "Invent" , "Create; begin" , "Come into existence" , "Bring into existence" .)