The leaves are dark green and smooth textured somewhat similar to that of a tomato plant. (It is in the same family as tomato, potato and pepper plants which is why you don't want your neighbor pitching his garden scraps over your fence.) Nightshades can be difficult to eradicate.
Horses are unlikely to eat nightshade or any other toxic plant unless there is no other feed available or it is baled into the hay and eaten accidentally. Signs of nightshade poisoning may include:
- colic like symptoms
- loss of muscle control
- dilated pupils
Also known as Eastern Black Nightshade.
Resource: Ontario Ministry of Agriculture and Rural Affairs, Poisoning of Horses by Plants, Penny Lawlis - Animal Care Inspector/OMAFRA.
If you suspect poisoning from any plant or substance call your veterinarian immediately.