Dieffenbachia ‘Mars’, also gets called the Dumb Cane plant. This is not an easy plant to grow, as it will not tolerate low winter temperatures or cold draughts. Dry air and fluctuating temperatures can be fatal to sometimes. Its large and highly decorative leaves make it a great favourite with interior designers. Its common name, Dumb Cane, is derived from the unpleasant effect of its poisonous sap on the mouth and throat. It’s also known for my air-purifying qualities.


This plant is highly toxic, keep out of reach of pets and children.


Pot: 17cm

Height: 60cm




How do you take care of a Dumb Cane plant?


Take care of a Dumb Cane plant by keeping it in consistently warm, humid conditions (minimum 10°C), especially during the winter.


Is the Dumb Cane plant poisonous?


Dumb canes are poisonous, due to the high levels of calcium oxalate crystals that are found in the plant. When ingested these crystals can cause swelling in the mouth, specifically the tongue. For this reason, it’s recommended to keep the plant away from pets or children. It’s also a good idea to wash your hands thoroughly after taking cuttings.


How much sunlight does a Dumb Cane need?


Dumb cane plant should have indirect light and should be kept away from direct sunlight or cold draughts. Keep this plant in a shady spot and away from any doors or windows.


How big does a Dumb Cane plant get?


The Dumb Cane plant grows to 5ft or more, but under normal room conditions, its leaves will fall to give a false palm effect. 


Does Dumb Cane purify air?


The Dumb Cane plant can purify certain toxins from the air, according to NASA’s Clean Air Study conducted in sealed space station conditions. The plant was noted to have cleaned the air of formaldehyde, xylene and toluene. 


Does Dumb Cane have flowers?


Dumb canes do flower in their natural habitat, however, they rarely do so indoors. The flower is not particularly showy and resembles an unfolding lead.    


How often should I water Dumb Cane?


Water the Dumb Cane plant regularly, to ensure that its soil is moist at all times but reduce watering in winter. Place the plant on a watered pebbled tray or mist its leaves regularly to recreate the humidity levels of its natural habitat.


Can you grow Dumb Cane in water?


It’s possible to propagate dumb cane plants in water, however, it’s best to transfer these plants to a pot with well-draining potting mix to ensure that they get access to the nutrients they need to grow properly.


Why are my Dumb Cane leaves curling?


Dumb Cane leaves curling can be caused by pests such Mealybugs or spider mites. If no pests can be found on the plant, then the plant may be underwatered, over fertilised, or might have been subjected too many extreme changes in temperature.


Why is my Dumb Cane leaves turning yellow?


Dumb Cane leaves turning yellow is another sign that the plant is not being kept in the right conditions. Check for pests and spray with an insecticide if you find any, alternatively, ensure that the plant is well watered and try to improve the humidity where the plant is being kept. 

Dieffenbachia mars "Dumb Cane"