Though wild berries can be tart, they're quite versatile and can be enjoyed in a wide variety of ways. It’s best to avoid touching or ingesting any kind of plant or berry in the wilderness. Don’t pick or eat wild berries or seeds. If someone you know eats wild berries or seeds, contact The University of Kansas Hospital Poison Control Center at 1-800-222-1222. All parts of the plant are toxic, but the berries are especially poisonous. Be prepared to describe the plant. It’s possible to confuse these poisonous wild berries with a similar red berry, like the cranberry when it’s off the tree. If eaten in high amounts, they may cause uncomfortable symptoms or even be fatal. Toxicity and symptoms. Puppies and Berries . Which berries are poisonous? 2. It has tiny heart-shaped leaves and tiny green flowers that swell into scarlet, poisonous berries. This list includes information about beneficial weeds and natural remedies that help counteract the itching caused by a couple of noxious weeds. They contain a mixture of tropane alkaloids that affect the nervous system. Kaci . The following list shows some of our most poisonous wild berries: Bittersweet (Woody nightshade) – Bittersweet produces clusters of egg-shaped berries, which change colour from green to yellow, orange and finally red as they mature and ripen. You’ll find it mainly in the southern half of the UK in woodland, along paths and in scrubby areas. However, a handful containing around 20 berries could be enough to be fatal when eaten. When it comes to wild plants and berries, you can never be too careful. Some produce mild poisoning symptoms, including dermatitis or stomach upset; others, such as nightshades, yew, mistletoe and jessamine, can cause death. Some berries such as raspberries and strawberries have been bred for hundreds of years and are distinct from their wild counterparts, while other berries, such as lingonberries and cloudberries, grow almost exclusively in the wild. While many berries are edible, some are poisonous to humans, such as deadly nightshade and pokeweed. However, you should notice the pointed holly leaves when foraging and avoid these poisonous red berries. Here are 10 delicious and safe wild berries you can eat — and 8 poisonous ones to avoid. What to do if someone eats wild berries or seeds . Someone without the proper education could be ingesting poisonous berries or poisonous plants without even knowing it. However, some wild berries contain toxic compounds. Yew Berries Some weeds can cause rashes on contact. Poisonous berries vary in toxicity levels. Don’t assume that because an animal is eating a wild berry that it’s safe for humans. About The Author. Pictures of poisonous plants can help you to identify vegetation and berries that should not be touched or eaten. The berries are green and they ripen to black. Because puppies are so small, just a berry or two can be fatal if ingested.