The poisonous plant known for its bright red berries is the yew tree. The Yew (Taxus spp.) contains toxic compounds called taxines, which can be harmful or even fatal if ingested. While the tree itself is evergreen and often used in ornamental landscaping, it’s especially important to be cautious around its berries. The bright red arils are attractive but contain seeds that are the primary source of toxicity. Symptoms of yew poisoning can include difficulty breathing, heart irregularities, and gastrointestinal distress. Due to these dangers, awareness surrounding the yew tree is crucial for both humans and pets.