Nightshade This plant produces tiny black berries that can resemble a blueberry if not carefully scrutinized. These are poisonous and can kill a person if large quantities are consumed. Here is how to tell the difference between a nightshade berry and an edible blueberry: • Blueberries taste sweet, while nightshade berries taste bitter. • Blueberries grow on woody shrubs, while nightshade berries grow on long green vines. • Blueberries typically have a powdery layer on their skin, while nightshade berries are shiny. Pokeweed Plant This is another very poisonous plant that produces berries that look similar to edible blueberries. While animals can and do eat these without suffering any ill effects, humans cannot. A small amount can kill a child and it doesn’t take much more to kill an adult. Here is how to tell the difference between a pokeweed plant berry and an edible blueberry: • Blueberries grow on woody shrubs, while pokeweed berries grow on bright purple stalks • Blueberries grow in a random pattern on bushes, while pokeweed berries grow in a grape-like cluster