Shrub planted among girasole and eryngo (8)
I believe the answer is:
oleander
'shrub' is the definition.
(I've seen this before)
'planted among girasole and eryngo' is the wordplay.
'planted among' indicates a hidden word.
'OLEANDER' is hidden in the letters of 'girasole and eryngo'.
(Other definitions for oleander that I've seen before include "Poisonous evergreen shrub with white, pink or red flowers" , "Poisonous shrub, also called rosebay" , "Red alone (anag.)" , "tree" , "Adore Len (anag.)" .)