Now we know better. Some red-berried specimens, however, are poisonous to humans and animals if eaten or touched. (Marc Lester / Alaska Dispatch News). Privet. Rose family, Almond \ Plum sub-family. The edible fruits are bitter, although it contains pectin, minerals, and vitamin C. The leaves and seeds contain poison hydrogen cyanide; hence, stay careful if you are a dog parent. Of course, you should continue to do a bit of pulling with hand tools. A commonly-shared rule among foragers is referred to as the Berry Rule, since berries of certain colors are more likely to be toxic: Only 10% of white and yellow berries are safe and edible. Red sage (Lantana camara), hardy in USDA zones 7 to 11, is often planted as ground cover and has spiny, green stems, leaves and flowers that grow in small, tight clusters. Manzanita bushes grow on the west coast of the U.S. and its berries are silvery-green ovals. Apple Tree . The edible fruits are bitter, although it contains pectin, minerals, and vitamin C. The leaves and seeds contain poison hydrogen cyanide; hence, stay careful if you are a dog parent. The majority won't cause much more than an upset stomach, and most dogs won't eat plants that are poisonous to them. Technically, it is only the seed that is toxic: The flesh, itself of the red berry (actually classified as an aril) is not. If the plant you are looking for isnt on the list, or you have questions or concerns about exposure or eating these plants, please call These tiny berries contain the toxic compound saponin, which may cause nausea, vomiting, and stomach cramps ( 51 ). Garden and houseplants may be mildly or severely poisonous to pets. Are cottonwood tree flowers poisonous to dogs? - Answers Dont wait for symptoms to show before getting help. And, check out the new greenhouse, the fabulous Heritage Garden. Geranium: All varieties of this common container plant are poisonous to dogs. These poisonous parts can cause several health issues or even death. She holds a degree in English Literature and History from the University of Toronto. Fascinating Foliage Facts: What trees are toxic to dogs? Finally, in an organic growing system, microbes feed plants. This is an invasive tree. Small Red Berry Plants That Are Poisonous for Dogs For that you need an organic herbicide but don't expect any of them to be 100 percent effective.