Dieffenbachia Poisoning – How Toxic is this Houseplant?

Dieffenbachia poisoning is talked about all the time when the plant is reviewed on line, but how toxic is the plant to your cats, dogs and children, really?Dieffenbachia is a very popular houseplant. It is also poisonous to children and pets. See how toxic the plant , symptoms and remedies.

Dieffenbachia one of the most common indoor plants, is easy to care and great as an office plant. However the plant can be poisonous so there are some situations where it might not be a good fit.

Sadly, there are many popular houseplants that are toxic to both humans and pets so care must be taken when growing them.  (Sago palm is another plant where all parts of the plant is toxic to humans.)

Another very toxic plant often grown in gardens, is brugmansia – also known as Angel’s trumpets.  Read about brugmansia here.

Dieffenbachia is an attractive house plant. It is native to the tropics. It is grown worldwide as an ornamental house plant. It is very attractive, with large white flecked leaves growing on a straight stem.

Home owners love the plant because it grows easily in low light conditions and fills a corner of a room to give a natural look.dieffenbachia leaves

The common name for dieffenbachia is dumbcane.  The name refers to its poisonous effect, mainly when ingested.  The poison can temporarily cause an inability to speak. Another common name for it is “mother in law’s tongue.”

Dieffenbachia Poisoning – Is it a real problem?dieffenbachia plant

The poisonous effect of the dieffenbachia plant happens because the plant contains needle-shaped oxalate crystals, (oxalic acid) as well as asparagines, a protein found in the plant. When the leaf is chewed, these crystals will cause a burning sensation.

This can make it a problem if the plant is grown around children or pets.  Generally the condition is mild and temporary. The poison is transmitted through the juice in the plant, found in the stems, leaves and more rarely, the roots.Stem and leaves of dieffenbachia

For children and pets, the problems are more severe than for adults.  The effects are rarely life threatening. The most common patients attended to for dieffenbachia toxicity are children younger than 5.

The toxicity of the plant is considered in the medium range.

Symptoms of dieffenbachia toxicityDieffenbachia poisoning shows symptoms in the eyes and mouth

Most of the symptoms of dieffenbachia poisoning are mouth related. Ingesting the leaf poison can result in any of these symptoms:

Mouth symptoms

  • swelling and blistering in the mouth or on the tongue
  • a burning sensation in the mouth or throat
  • nausea and vomiting
  • hoarseness
  • difficulty swallowing

Eye Symptoms

If the poison is transferred to the eyes from the hands, these symptoms could occur:

  • damage to the cornea
  • eye pain.

Skin symptoms

  • general redness
  • burning
  • itching

Ingestion symptoms

If the juice of the plant has been swallowed, one can expect

  • diarrhea
  • vomiting
  • difficulty breathing (if enough is consumed)

Since the juice of the leaves produces a burning sensation, it is unlikely that large amounts would be consumed, so the last symptoms are “worst case” scenarios.

Dieffenbachia Poisoning with Animalspuppy and ktten

Since dogs and cats are most likely to be random chewers, the toxicity of the plant can be more severe. There have been reported instances of death with dogs, cats, rabbits and pet birds.

If you have young puppies or kittens, dieffenbachia is probably not a good plant to grow indoors since they love to chew on anything nearby.

In addition to the symptoms above for humans, dieffenbachia poisoning in animals might also include:

  • pawing at the face
  • restlessness
  • drooling
  • difficulty eating
  • loss of appetite
  • unconsciousness

Since the symptoms in animals can be life threatening, a vet should be called if you suspect dieffenbachia poisoning.

Treatment for dieffenbachia poisoningFirst Aid Care

:If you or your child is affected, first wipe out the mouth with a cold, wet cloth.  Drink milk to ease the symptoms. For eye symptoms, rinse them well with cool water.

The most common additional medical treatments for dieffenbachia poisoning are antihistamines, medical charcoal or analgesic agents.

As long as the plant’s contact with the mouth or eyes is not severe, the symptoms will usually resolve in a few days.  You can also call poison control for more information.

Cautions with dieffenbachiaDieffenbachia office plant

Dieffenbachia is a common office plant and should pose no problems when uses this way. However, since this plant is also common in many homes, some care should be exercised. If the plant needs to be cut, it is wise to wear gloves.

If you have children or pets, it should be kept out of reach. If you do grow the plant be aware that it does have poisonous effects.  Be sure to seek urgent medical attention for your child or pets if the lips or tongue become swollen or there is any difficulty breathing or swallowing.

Share on Social Media

  28 comments for “Dieffenbachia Poisoning – How Toxic is this Houseplant?

  1. Muhyiddeen
    03/28/2019 at 11:34 am

    Good information

    • Monika
      07/01/2020 at 2:16 am


      Whilst cutting the plants core I sliced my thumb too. I’ve been soaking it in salt water but what else can I use? I dint like medication but only haemiooathic medicine. What can you suggest?

  2. Tim Miltz
    04/15/2019 at 8:19 pm

    Thanks for sharing these details.

    We have one and I was concerned for the cat

    Tim Miltz

  3. Mia
    05/08/2019 at 6:44 pm

    So it’s poison only when ingested not by merely touching the leaves?

    • Carol
      05/08/2019 at 11:46 pm

      Hi Mia, Generally speaking, ingesting is the problem, but the plant has sap which could be harmful to skin. It is suggested to wear gloves when handling the plant, particularly if it is oozing at all.

  4. Jo Man
    06/18/2019 at 7:19 pm

    What about other range of colours of the same species like the pinkish ones?

    • Carol
      06/18/2019 at 10:00 pm

      I am not familiar with a dieffenbachia with pink coloring. Do you have a species name?

  5. Felix Mamman
    08/22/2019 at 4:41 am

    Thanks for the information.

  6. nayeem
    08/25/2019 at 8:34 am

    I have seen the cat eating duffen leaf in my house .I can not under stand but perhaps the pet was sick and in duffen there may be some cure effect.

    • Carol
      08/25/2019 at 10:30 am

      If your cat appears sick you should take it to a veterinarian.

  7. Alina
    10/03/2019 at 6:55 pm

    I got a skin irritation after watering this plant. Small blood spots have started to appear on the affected area. I’ve taken an antihistamine and applied calamine lotion on the area. Should I go see the doctor or call poison control? And could these symptoms get any more severe? Are there any other meds I should take? Thank you

    • Carol
      10/06/2019 at 4:43 pm

      Hi Alina. Normally the toxicity is a problem for children and pets and is worse when ingested. If your irritation continues or gets worse, I would definitely see a doctor.

  8. ALAM
    10/31/2019 at 4:04 am

    So keep it far from your area. there are many plants to keep in home

  9. Nikita Gilbile
    01/28/2020 at 1:53 pm

    I’ve kept one of these plant just in front of me on the study table so is it harmful to me?

    • Carol Speake
      01/28/2020 at 4:11 pm

      No, you’ll be fine. The plant it harmful when eaten , so one should be careful with children and pets.

      • Angela Gurrola
        03/03/2020 at 4:29 pm

        Carol Hi. My name is Angie, and my mother had a terrible thing happen to her because of this plant. She had a growth that swelled up on her wrist, from cutting a piece off to transplant and make a second one in a pot. Some of the juice (or sap) came in contact with her skin on her wrist and it grew to the size of a quarter or just a little bigger than a quarter, and she had to have it surgically removed. I believe we know some things and/or symptoms of this type of plant, but it may have other known properties or symptoms steaming from it, that no one knows anything about, other than what some have reported. The doctor that saw my mother knew exactly what this was from, but HIGHLY STRESSED FOR HER TO DISPOSE OF THIS PLANT OR PLANTS RELATED TO THIS ONE, because of the toxicity & poisioness compound of this plant!! Just thought I would put this out there for anyone wanting to know the dangerous effects of it!! BEWARE

        • Sergio Gonzalez
          06/28/2020 at 7:20 pm

          Hello , I was just cutting some dead leaves of this plant ( 8 feet tall). kind of squeezed the leaves by holding them between fingers,of which one was soaked
          with the juice. About five minutes later I felt a very strong burning and numbness pain between flesh and fingernail. Also a red spot started to cover the tip of my finger. Maybe by instinct I put my finger under cold running water
          and squeezed it over and over. the pain moved to the cuticle. after 5 to 10 mins
          of cold water treatment, my finger slowly came back to be normal.
          I am sharing this unexpected situation. I had read sometime ago about
          dieffenbachia’s toxicity.

  10. Katie
    04/25/2020 at 12:23 pm

    I pruned some dead leaves from my dumbcane and now my hands are burning/itching. I’ve washed them thoroughly but it didn’t help. Do you have any suggestions? Thanks!

    • Carol Speake
      04/25/2020 at 1:11 pm

      Most rashes from dieffenbachia will ease in time. I can’t really give medical advice, since I am not a doctor. If the rash continues, you should consult your medical provider.

  11. Swarnalata
    06/25/2020 at 5:37 pm

    I have got one Dieffenbachia,Really scared now by reading people’s comments.Thinking through away.

Leave a Reply

Your email address will not be published. Required fields are marked *