Poison ___ (plant) (3)
'poison plant' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for ivy that I've seen before include "Climbing plant, associated with holly" , "Song: 'Poison --'" , "Evergreen creeping plant" , "With holly, it's seasonally decorative" , "Woody climber" .)
'poison plant' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for sumac that I've seen before include "Small tree bright in autumn" , "Tree or shrub; reverse of French writer" , "purchase from garden centre?" , "plant" , "Shrub or small tree - Camus (anag)" .)