Poisonous Plants

There are many plants that can be harmful to both humans and pets.  This page will provide some essential information about some of these plants.  It must be recognized that no list is all inclusive.  The following information only includes some of the more common plants involved in exposure calls we receive through the poison help hotline.  The poison center is available 24 hours a day in both English and Spanish to answer questions about potential or known plant toxicities or to provide medical advice about any plant exposure by calling 1-800-222-1222.

DID YOU KNOW? Ingestion of the following plants can cause considerable pain and irritation to the mouth area potentially making it difficult to swallow:
  • Caladium
  • Dieffenbachia
  • Elephant Ears
  • Pothos Ivy

Ingestion of the following plants can cause cardiac (heart) problems that may require medical intervention:

  • Oleander
  • Lily of the Valley

Ingestion or any physical contact with the following plants may cause severe skin irritation and swelling at or near the exposed area, Remember “leaves of 3 let it be”:

  • Poison Ivy
  • Poison Oak
  • Bull Nettle

Ingestion of the berries from the following plants may be harmful to your health:

  • Holly
  • Mistletoe

The following plants are considered potentially poisonous and can cause harmful effects if ingested:

  • Morning Glory
  • Lantanas

The following food type plants have parts that can be potentially poisonous if consumed:

  • Wild mushrooms
  • Tomato plant foliage and vines
  • Apple seeds
  • Cherry, peach and apricot tree leaves
  • Kidney beans and lima beans
  • Rhubarb leaf blades
  • Potato plant foliage

Treatment Recommendations (First Aid)


Plant in the Mouth
  • Remove remaining plant parts from mouth
  • Wash out mouth with water
  • Write down the name of the plant in question (if available)
  • Check for irritation and swelling
  • Call the Poison Center

Plant on the skin

  • Remove contaminated clothing (if any)
  • Wash contaminated area with soap and water
  • Observe for skin irritation and swelling
  • Call the Poison Center

Plant in the Eye

  • Wash hands and arms with soap and water
  • Rinse affected eye with lukewarm water for 15 min
  • Observe affected eye for redness, swelling, irritation, blurred vision, or burning sensation
  • Call the Poison Center

Prevention Tips

  • Identify and label all plants in your home with both common and scientific name
  • Call the Poison Center for information on their toxicity
  • Keep potentially poisonous plants out of sight and out of reach of children and pets
  • Teach children not to put any plants or berries in their mouth.
  • Call the Poison Center if you have additional questions or concerns