Floral wreath kid is upset to put down (7)
I believe the answer is:
garland
'floral wreath' is the definition.
(I've seen this before)
'kid is upset to put down' is the wordplay.
'kid' becomes 'rag' (I've seen this in other clues).
'is upset' shows that the letters should be reversed in order (I've seen 'being upset' mean this).
'to put down' becomes 'land' ('land' can be a synonym of 'put down').
'rag' written backwards gives 'gar'.
'gar'+'land'='GARLAND'
(Other definitions for garland that I've seen before include "Judy . . . . . . . who played Dorothy in The Wizard of Oz" , "Circular band of flowers" , "Judy - - , legendary singer" , "Festoon of flowers" , "Circle of flowers" .)