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Making a DIY Carnivorous Plant Terrarium

A terrarium is a little container – usually glass – that houses plants and can contain its own ecosystem. Terrariums are very low maintenance, and therefore an easy way to add some greenery to your home. Terrariums can either be sealed with a lid or open at the top. For carnivorous plant terrariums specifically, an open container is recommended due to the nature of the plants.

Carnivorous plants are those that catch and feed on insects. These are really interesting plants that can help control the number of bugs in your home. This is why we recommend using open containers for these terrariums – so they can catch all the bugs they want. This article is a step-by-step guide to making your own DIY carnivorous plant terrarium.

Types of Carnivorous Plants

1. Venus Fly Trap

2. Pitcher Plants

3. Sundew Fly Trap

4. Monkey Jars

5. Purple Pitcher Plant

If you’d like some more details about these plants, have a look at our Top 5 Carnivorous Plants for Beginners article!

Making Your Carnivorous Plant Terrarium

Gather your materials

  • A container to use as the terrarium. This could be a jar, wine bottle, fish tank, or any other container that fits all the necessary components.
  • Gloves to wear while handling the carnivorous plants.
  • Tweezers to help move your plants into place.
  • The substrate that your plants will grow in. Carnivorous plants naturally grow in nutrient-poor soil, so we don’t recommend adding too much organic material to a carnivorous plant terrarium.
  • Stone or gravel.
  • Your choice of carnivorous plants
  • Activated charcoal.
  • A spray bottle of water. 

Putting your terrarium together

1. Clean your container.

2. Create a drainage layer with the gravel or stones. This should be about two inches thick depending on the size of your container.

3. Add a slightly smaller layer of activated charcoal. This helps to reduce the risk of root rot.

4. Create a substrate layer thick enough to accommodate all the roots.

5. Plant up your terrarium by digging little holes in the substrate and gently adding in your carnivorous plants. Make sure all of the roots are covered, trimming them if necessary.

6. Gently tap the sides of the terrarium to remove any air pockets from the soil.

7. Use the spray bottle to clear away any dirt from the sides of the terrarium and moisten the soil.

8. Decorate your terrarium however you like. This could be with decorative rocks, pieces of wood, moss, or other decorative elements.

Caring For Your Carnivorous Plant Terrarium


The substrate should be kept consistently moist, but never soggy. Remember, terrariums don’t have drainage holes so shouldn’t be watered as frequently or regularly as regular potted plants. It’s best to use distilled water or rainwater as opposed to tap water; this helps to avoid mineral buildup.


Feeding little bugs to carnivorous plants is the best way to get them nutrients. As they naturally grow in nutrient-poor soil, you don’t need to give them additional fertiliser. Click here for a detailed guide on feeding Venus Fly Traps.


A carnivorous plant terrarium is an incredibly unique addition to a houseplant collection. It is also a relatively easy, low-maintenance way to have some extra greenery in your home. Click here to learn more about growing carnivorous plants.

Updated on December 19, 2023

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