Corner with talk of flower display (10)
I believe the answer is:
buttonhole
This clue is a double definition.
'corner with talk' is the first definition.
(to detain someone in conversation)
'flower display' is the second definition.
(a flower might be displayed in a buttonhole)
'of' is the link.
(Other definitions for buttonhole that I've seen before include "Place to sport flower detain with chat" , "carnation, typically" , "Corner" , "Collar" , "Small slit in a coat lapel - detain in conversation" .)