Sunflower State (6)
I believe the answer is:
'sunflower state' is the definition.
(synonyms)
This is the entire clue.
(Other definitions for kansas that I've seen before include "State north of Oklahoma" , "State of central USA" , "Dorothy and Toto lived here on a farm" , "Corny state?" , "''Toto, I've a feeling we're not in ... anymore'' (Dorothy in Wizard of Oz)" .)