7. Dumb Cane (Dieffenbachia)
Dumb canes come in a variety of beautiful multicolored leaf patterns and they’re super easy to grow and keep as house plants. But they’re actually called dumb canes because of their poisonous effect when eaten, which can slur or stop speech and even close the throat and be fatal in large quantities — so make sure to keep this one away from pets and curious young children.
Available from Home Depot ($13), Amazon ($7), and your local plant nursery.