Decorative items: sprays between two flowers (6,4)
I believe the answer is:
'decorative items' is the definition.
'sprays between two flowers' is the wordplay.
'two flowers' can mean two substitutions for 'flower'.
'sprays' becomes 'jets'.
'between' indicates putting letters inside.
'flower' becomes 'Ob' (Russian river - something that flows).
'flower' becomes 'dart' (River Dart in Devon).
'jets' inserted within 'obdart' is 'OBJETS DART'.
(Other definitions for objets dart that I've seen before include "decorative little items" , "decorative things" , "collectible items" , "Small decorative items" .)