Fairy queen avoiding difficulty to get flower (10)
I believe the answer is:
periwinkle
'flower' is the definition.
(I've seen this in another clue)
'fairy queen avoiding difficulty to get' is the wordplay.
'fairy queen' becomes 'peri' (I've seen this before).
'avoiding difficulty' becomes 'kle' (I can't explain this - if you can you should believe this answer much more).
'to' means one lot of letters go next to another (I've seen this in other clues).
'get' becomes 'win' (winning is a kind of getting).
'kle' after 'win' is 'winkle'.
'peri'+'winkle'='PERIWINKLE'
(Other definitions for periwinkle that I've seen before include "Plant; mollusc" , "Plant with five-petalled flowers" , "may be found on the seashore" , "gastropod" , "Evergreen creeper" .)