Dieffenbachia Tropic Marianne

A Beginner's Guide to Dieffenbachia Tropic Marianne Plant Care | All you Need to Grow

Family: Araceae            
Common Name: Tuftroot
Botanical Name: Dieffenbachia seguine ‘Tropic Marianne’

Like nature presenting you with a blank slate, the large leaves of this Dieffenbachia Tropic Marianne houseplant feature deep green borders framing creamy white centers that seem to be longing for color. Less is more, as they say. The best part of owning this easy-care indoor plant is its tolerance for being placed in virtually any space within your home or office!

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Dieffenbachia 'Tropic Marianne' plants prefer bright, indirect light. This plant will do best when it’s in a location that is well-lit with filtered sunlight. Make sure to keep your plant a few feet away from windows during the hottest parts of the day with intense light. The midday is usually when the sun is the strongest. 


Ensure you don’t over-water your Dieffenbachia 'Tropic Marianne', as this plant will develop root-rot if it remains in overly wet soils! It’s important to not let it to sit in standing water, while also not allowing the soil to remain dry for more than a few days.


Dieffenbachias do best in soil that is a high-quality, well-draining potting mix and allows extra water to easily drain. We suggest a mix that includes ingredients such as peat moss, perlite, and vermiculite! These ingredients are ideal for helping with good drainage. For optimal growth, aim for a pH level range of 6.0 to 7.0. Re-pot your plant every 1-2 years or when it becomes crowded. This will help this plant to continue to grow and be healthy! 


A Dieffenbachia 'Tropic Marianne' plant thrives in temperatures between 65°F to 80°F (18°C to 27°C) during the day. At night, this plant can tolerate slightly cooler temperatures, down to around 60 degrees. Don’t expose this plant to temperatures below that though, as it is bad for the plant’s health.


Ideally, dieffenbachia should be in humidity levels between 50% to 60% or higher. Maintaining this range can help your plant with healthy growth and prevent issues with its leaves. To increase humidity levels, you can regularly mist your plants leaves, use a humidifier, place a tray near your plant that is filled with water and pebbles, or group plants together! You should also avoid over-watering this plant! 


Fertilize your Dieffenbachia 'Tropic Marianne' plant every 4 to 6 weeks during the spring and summer. We recommend that you use a balanced, water-soluble fertilizer with equal amounts of nitrogen, phosphorus, and potassium or a ratio close to 20-20-20. In the winter, you can reduce or pause fertilizing this plant!

Growth Rate

On average, a dieffenbachia can reach a mature height of about 2 to 3 feet (60 to 90 cm), when it is grown as a houseplant. However, under optimal conditions, this plant can grow up to 4 feet (120 cm) or more!

Pet Friend or Foe

A Dieffenbachia 'Tropic Marianne' is not considered pet friendly! Foe!

Pro Tips

  1. Ensure that the soil of your Dieffenbachia 'Tropic Marianne' is not over-watered! The soil can dry out completely in between watering!
  2. Reduce or pause fertilizing this plant during the cooler months of the year.
  3. Get rid of any damaged leaves to help keep the plant’s overall look and health!
  4. You should re-pot your Dieffenbachia Tropic Marianne every 1 to 2 years or as necessary!
  5. Avoid exposing this plant to the direct sunlight, as it can damage and burn its leaves.

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