Plant seeds for a pig (3)
I believe the answer is:
sow
I believe this clue is a double definition.
'plant seeds' is the first definition.
(I've seen this before)
'a pig' is the second definition.
(thesaurus)
'for' acts as a link.
(Other definitions for sow that I've seen before include "Female badger" , "swine" , "Female bear" , "farm animal" , "Plant seeds for the pig" .)