Related Clues:

• Poisonous shrub, sometimes
• Collegiate climber
• ''Poison'' shrub
• Wrigley stuff
• A kind of shrub
• Vine
• Plant of the cashew family
• "Poison" plant
• It's on some hallowed walls
• Clinging plant
• Wall growth
• Poison --
• Columbia, for one
• Poison ivy, e.g.
• What a kid'll eat, in song