Cut back all around plant (8)
I believe the answer is:
prunella
'plant' is the definition.
The answer is an example.
'cut back all' is the wordplay.
'cut' becomes 'prune' (synonyms).
'back' says the letters should be written backwards.
'all' in reverse letter order is 'lla'.
'prune'+'lla'='PRUNELLA'
'around' is the link.
(Other definitions for prunella that I've seen before include "Silk fabric" , "climbing plant" , "-- Scales, actress" , "It reputedly heals everyone" , "flower" .)