Holiday decorations often include decorative greenery to help get our minds off the drab winter. People may also bring in branches trimmed from evergreen trees and bushes outside their homes. However, sometimes this greenery can be dangerous.
Holly is commonly associated with winter and holiday decorations, but care should be taken to keep it out of reach of both children and pets, as ingestion can be harmful. Wreaths and other decorations can include holly berries (Ilex species) that are toxic to both humans and pets due to the presence of saponins, chemical compounds that can cause gastrointestinal irritation when ingested. For humans, the symptoms of poisoning include nausea, vomiting, diarrhea, and stomach pain. While consuming a few berries may only cause mild discomfort, eating larger amounts can lead to more serious symptoms and requires medical attention. If holly berries are consumed, it is crucial to contact poison control or a healthcare provider. Holly is easily recognizable by its spiny, dark green leaves and clusters of bright red berries, although some varieties may produce yellow or orange berries.
Another potentially dangerous evergreen is yew, which produces fleshy red berries with a mild sweet taste. However, the seed inside the berry is poisonous. Taxine alkaloids in the seed can cause upset stomach, drowsiness, trembling, rapid heartbeat, and rapid breathing. If untreated, yew poisoning can lead to low heart rate, abnormal heartbeat, and death from heart failure.
Pets, particularly dogs and cats, can also suffer from the toxic effects of holly berries, with symptoms such as drooling, vomiting, diarrhea, and lethargy. If your pet eats berries or leaves from holly or yew, contact a veterinarian or an animal poison control hotline.
Poison Control Center 1-800-222-1222
https://www.poison.org/articles/holly-berries
https://www.poison.org/articles/yew-and-paclitaxel
https://www.avma.org/resources-tools/pet-owners/petcare/holiday-pet-safety