- Peace lily
- Philodendron
- Poison hemlock
- Poison ivy
- Poison oak
- Poison sumac
- Pokeweed
- Privet
- Rhododendron
- Rhubarb leaves
- Rosary pea
- Rubber vine
- Sandbox tree
- Spider lily
- Sweet peas
- Tansy
- Thorn apple
- Tobacco
- Tomato plant leaves
- Tung tree
- Water hemlock
- White snakeroot
- Wisteria pods and seeds
- Yew
Note to parents: This is a general guide only. For more information, please consult your pediatrician or poison control center.