Poisonous Plant Quiz

NightshadeSorry! That's the wrong answer. This weed is Climbing nightshade, which occurs throughout Ontario in open woods, edges of fields, fence lines, roadsides and occasionally in hedges and gardens.

Stems and leaves are poisonous to livestock. Nightshade contains alkaloids that interfere with digestion by inhibiting the autonomic and parasympathetic nervous systems and by directly irritating the digestive system.

  • abdominal pain
  • stupidity
  • dilation of pupils
  • loss of appetite
  • diarrhea
  • loss of muscular coordination
  • unconsciousness
  • death

A veterinarian should be consulted immediately for supportive treatment to reduce the damage caused by ingestion of poisonous plants.

Back to Horse - Feeding and Pastures

For more information:
Toll Free: 1-877-424-1300
E-mail: ag.info.omafra@ontario.ca

Author: Penny Lawlis - Animal Care Specialist/OMAFRA
Creation Date: Not Available
Last Reviewed: November 2003