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Dieffenbachia "Memoria Corsii" Care Guide

Dieffenbachia "Memoria Corsii" Dumb Cane care guide

Dieffenbachia (Dumb Cane) Memoria Corsii houseplant with large leaves

Get Your Color Fix with the Memoria Corsii Care Guide: The Tricolor Dumb Cane That Packs a Punch!

Welcome to our Memoria Corsii care guide! If you're looking for a beautiful, low-maintenance plant to add to your collection, it might just be the perfect fit. In this guide, we'll cover all the basics of Memoria Corsii care, from lighting and watering to propagation and fertilization.

About Memoria Corsii:

The Memoria Corsii is a tropical plant that belongs to the Araceae family. It's known for its stunning variegated foliage, which features a mix of green and silver leaves. This plant is native to South America and can grow up to 4-6 feet tall with proper growing conditions indoors.

Here are some tips to help you get started:

Interesting Facts:

  1. The Dieffenbachia Memoria Corsii belongs to the Araceae family, which is the same family as other popular indoor plants like the Peace Lily and Philodendron. Also related to the 'Camille" Dumb cane
  2. The Memoria Corsii can grow up to 4 feet tall and 3 feet wide, making it a medium-sized plant. It has large, broad leaves that are usually green and white with pink or red spots.
  3. Like other Dieffenbachias, the Memoria Corsii contains calcium oxalate crystals in its leaves, which can cause irritation if ingested or if the sap comes into contact with the skin.
  4. The plant is also known for its air-purifying qualities, as it can filter out toxins like formaldehyde, benzene, and trichloroethylene from the air in your home or office.

'Memoria' Care Guide


The Memoria Corsii Dieffenbachia plant thrives in bright, indirect light. Direct sunlight can scorch its leaves, so it's best to place it in a location that receives filtered or indirect light. Don't forget to rotate the plant regularly so the plant can grow evenly. 


This plant requires consistently moist soil, but not waterlogged. Water it once a week, or when the top inch of soil feels dry. Make sure to allow the water to drain completely, as water-logging can lead to root rot. 

You can allow them to dry out in-between waterings as we find that they prefer to let you know when they need water (leaves begin to sightly droop).


The best soil for Dieffenbachias, should be well-draining and aerated to prevent water-logging and root rot. A good soil mix for this plant should be rich in organic matter and have a slightly acidic to neutral pH. Here is a recipe for a suitable soil mix:

  • 1 part peat moss: It holds moisture well and provides good aeration for the roots.
  • 1 part perlite: It helps with drainage and provides air pockets in the soil.
  • 1 part sand: It adds weight to the soil and helps with drainage. 


These don't require a lot of fertilizer as it can cause their roots to burn and leaves drooping. Using a commercial water-soluble all purpose fertilizer 1x a month is generally all they require. Foliar feeding is also a great idea. 


These plants prefer warm temperatures and can be sensitive to cold drafts. The ideal temperature range for these plants is between 65°F and 75°F (18°C to 24°C), and they cannot tolerate temperatures below 60°F (16°C). 

Avoid placing the plant near cold windows or air conditioning vents, which can cause temperature fluctuations and stress the plant.


In general, Memoria Corsii prefer higher humidity levels to thrive. The ideal humidity range for these plants is between 60% and 80%.

For dry climates, here are some tips you can follow:

  1. Misting: Use a spray bottle to mist the plant's leaves and surrounding area with water. Do this once or twice a day, especially during the drier winter months.

  2. Humidifier: Use a room humidifier to add moisture to the air around the plant. This can be especially helpful during the winter months when the air tends to be drier.


It's important to choose a container that is large enough to accommodate the plant's growth and allow room for its roots to spread out. Choose a container that is 1-2 inches (2.5-5 cm) wider than the current container. Make sure the container has drainage holes to prevent water from accumulating at the bottom. 

When to Repot:

As for when to repot the Memoria Corsii Dieffenbachia, it's recommended to do so every 1-3 years, or when the plant has outgrown its current container. Signs that it's time to repot include:

  1. The plant's roots are growing through the drainage holes.

  2. The soil is drying out too quickly, indicating that the roots have filled up the current container.

  3. The plant is top-heavy and tipping over.

  4. The plant's growth has slowed down or stopped.

Growing In Water:

To grow Memoria Corsii Dieffenbachia hydroponically, you can use a simple vase or mason jar filled with the water. It's important to fertilize the plant with diluted water-soluble solutions and change the water regularly, at least once a week, to prevent bacterial growth and rotting.

Common Pests:

Pests: Common pests that may affect Memoria Corsii Dieffenbachia include spider mites, mealybugs, fungus gnats and scale insects. These pests can be controlled with insecticidal soap or neem oil. Be sure to follow the package instructions and apply the product as directed.

We have found Thrips and Spider Mites aren't as interested in the Memoria Corsii variety as they are more fond of the "Camille" Dieffenbachia. A weekly inspection of the leaves will allow you to catch them early. You can treat them with a horticulture soap spray, or a weekly neem oil leaf shine.

For fungus gnats use mosquito bits as a watering solution and make sure to saturate the soil thoroughly for best results. Repeat as necessary, but at least once two weeks later. 


  1. Yellowing leaves: This can be caused by overwatering or under-watering, insufficient light, or nutrient deficiencies. Make sure the plant is getting the right amount of water and light, and fertilize the plant with a balanced fertilizer according to the package instructions.

  2. Brown tips or edges on leaves: This can be caused by low humidity, over-fertilization, or excess salt buildup in the soil. Increase humidity around the plant, reduce fertilization, and flush the soil with water to remove excess salt.

  3. Drooping leaves: This can be caused by under-watering or root rot. Check the soil moisture level and adjust watering as needed. If the roots are mushy or discolored, the plant may have root rot, and it may be necessary to repot the plant in fresh soil and trim away damaged roots.

  4. Brown spots on leaves: This can be caused by bacterial or fungal infections, which can be spread by overwatering or poor air circulation. Remove any affected leaves and improve air circulation around the plant to prevent the spread of the infection.


Remember to regularly inspect your plant for signs of problems and address them promptly to keep your Memoria Corsii Dieffenbachia healthy and thriving. 


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