On the level hidden by Wisteria Frutescens going all the way around (4)
I believe the answer is:
fair
'wisteria frutescens going all the way around' is the definition.
I can't judge whether this defines the answer.
'on the level hidden' is the wordplay.
'on' is an insertion indicator (as in clothing \'on\' a person).
'the level' becomes 'a' (A level is an example).
'hidden' becomes 'fir' (I can't justify this - if you can you should give a lot more credence to this answer).
'a' inserted inside 'fir' is 'FAIR'.
'by' acts as a link.
Can you help me to learn more?
(Other definitions for fair that I've seen before include "Sign following Pisces" , "Equitable, just (4)" , "promotional exhibition" , "'Just, reasonable (4)'" , "kind of entertainment" .)