Possibly trees to favour
I believe the answer is:
rosette
'favour' is the definition.
('favour' historically meant a token of affection)
'possibly trees to' is the wordplay.
'possibly' is an anagram indicator.
'trees'+'to'='treesto'
'treesto' anagrammed gives 'ROSETTE'.
(Other definitions for rosette that I've seen before include "sign of a champion?" , "Pattern" , "decoration showing support for party" , "Prizewinner's decoration" , "Badge of office or honour" .)