Gardening: Common plants could poison pets, children. Floridatoday. May 10, 2008.Generally, when we think of plants, we have good thoughts about them.They provide food, fragrance and beauty to our world. Then, there are those plants that are poisonous and can cause illness or even death. The good news is that with a little knowledge, no one, including our pets, needs to suffer from poisonous plants.[ See ]