California or Nebraska fern and devil's porridge — is a large, invasive, noxious weed. It's not the same thing as hemlock trees, which are not poisonous. In the 1800s poison hemlock jumped from ...

Hungry sheep are often poisoned by lupine plants when being trailed through ranges in late summer. Cows eating lupines during early pregnancy sometimes have calves with skeletal defects. Lupines ...

Three weeds commonly found in Minnesota that remain toxic when dried in hay are hoary alyssum, wild parsnip and poison hemlock. Hoary alyssum is toxic only to horses. It’s a perennial weed that ...