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 ...

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 ...