Burning some garden trash (6)
I believe the answer is:
ardent
'burning' is the definition.
(thesaurus)
'some garden trash' is the wordplay.
'some' indicates a hidden word (some of the parts of the word are used).
'ARDENT' is hidden within 'garden trash'.
(Other definitions for ardent that I've seen before include "Enthusiastic or passionate" , "Burning, passionate" , "Having great warmth of feeling like a lover" , "Passionate, fervent" , "Fiery and zealous" .)