I get up on Sunday to get flowers (6)
I believe the answer is:
irises
'flowers' is the definition.
(I've seen this before)
'i get up on sunday' is the wordplay.
'get up' becomes 'rise' ('rise' can be a synonym of 'get up'**).
'on' means one lot of letters go next to another.
'sunday' becomes 's'.
'i'+'rise'+'s'='IRISES'
'to get' acts as a link.
(Other definitions for irises that I've seen before include "Flowers and parts of eyes" , "Expensive painting" , "Flowers found in the eye" , "Plants with sword-shaped leaves" , "Flags" .)