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The Daily Insight

How do I build a terrarium

Author

Robert Spencer

Published Mar 29, 2026

Choose a Container. Choosing your container and plants is half the fun of making a terrarium. … Choose the Plants. … Add Drainage Layers. … Add Moss and Potting Mix. … Prepare the Plants. … Add Plants. … Decorate. … Water the Terrarium.

How do you make a terrarium step by step?

  1. Step 1: Cover the bottom of your terrarium with a 1 ½ inch-thick layer of small stones or pebbles. …
  2. Step 2: Add a very thin layer of activated charcoal. …
  3. Step 3: Add a layer of potting soil. …
  4. Step 4: Now it’s time to add your plants.

Is it cheaper to build a terrarium?

A terrarium can be as inexpensive to create as the soil and plants you choose. Putting together a terrarium is a quick and affordable way to liven up any indoor space!

Can you build your own terrarium?

Your DIY terrarium will need a layer of sand and crushed charcoal to help with drainage so the plants don’t rot. And in the average-sized terrarium, a 1-in. layer of a sand/charcoal mix is sufficient when your learning how to build a terrarium.

Do you really need charcoal for a terrarium?

Charcoal is an important element in a terrarium because it helps remove toxins and odors. If you don’t have charcoal, you can still make a terrarium, but you’ll need to to take extra steps to ensure your plants remain healthy and that the environment inside your terrarium remains clean and odor-free.

How do you make a beginner terrarium?

  1. Select your plants and the number of plants that you’d like. …
  2. Find a container that will fit your plants. …
  3. Determine the height that you want your plants to sit. …
  4. Place a one-inch layer of small rocks and pebbles as the drainage base to ensure that excess water does not damage the roots of your plants.

Do terrariums need lids?

Open terrariums do not require a lid. It is perfect for plants that prefer drier conditions and do not require a moist environment.

What plants are suitable for terrariums?

  • Ferns – Maidenhair, Birds nest, Button ferns.
  • Carnivorous plants – Venus fly traps, Pitcher plants, Sundew plants.
  • Dwarf palms.
  • Airplants – Tillandsia.
  • Succulents- cacti, Hawthornia, Echeveria, Crassula, etc.
  • Peperomia.

What materials do you need to make a terrarium?

  1. Glass container with no drainage holes, with or without a top.
  2. Clean aquarium gravel or small crushed stone.
  3. Activated charcoal (found at a nursery or pet supply stores)
  4. Terrarium plants.
  5. Sterile potting mix.
  6. Sheet moss.
  7. Decorative elements (optional)
Can moss grow in terrariums?

Moss and terrariums go together perfectly. Requiring little soil, low light, and dampness rather than lots of water, moss is an ideal ingredient in terrarium making.

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Are terrariums self sustaining?

Essentially a terrarium is a self-sustaining plant ecosystem with living plants inside, so plant selection is crucial. It’s best to choose plants that are both slow growing and enjoy a bit of humidity. … Combine plants that like similar light conditions.

Do you need sphagnum moss in a terrarium?

Sphagnum Moss is true terrarium staple. It has huge utility thanks to its incredible water retention capabilities – making it just as effective a substrate as a carpeting moss. Not all that surprising considering its natural role of forming peats bogs in the wild through storing water.

How expensive is a terrarium?

Total Cost: After adding the total cost of maintaining a terrarium, the price range appears to be around $10 to $2,265. The high price range is usually for people who will heavily invest in a terrarium. Overall, the average cost for most terrarium owners is usually less than $100.

Why should I make a terrarium?

Terrariums are most useful for small plants that do not adapt well to normal home atmospheres. When properly planted and located, they provide a novel way to grow many plants with minimal care. A terrarium is a good way to keep plants indoors with a minimum of care.

Can I use BBQ charcoal for terrarium?

To start, activated charcoal is especially good to use for plants that are growing in terrariums. Activated charcoal for succulents would work as well. It’s also great for plants that are growing in cachepots and other closed-in planting mechanisms, and it’s ideal for helping to absorb extra water in plants.

Can I use BBQ charcoal for plants?

Is BBQ Charcoal Ash Good for Plants? BBQ charcoal ash is good for plants if you use Natural Lump Charcoal. It is made from hardwood scraps, which makes it a great source of nutrients for the soil. However, ash from Charcoal Briquettes should be avoided as harmful additives are used to manufacture it.

What can I use instead of activated charcoal?

Use of burned toast as a substitute for activated charcoal in the “universal antidote”

What are the disadvantages of terrarium?

  • It requires regular ventilation, otherwise condensation builds up on the glass.
  • The drainage layer may become full of water and gases from material decomposition.
  • Double bottom drainage layer is often required for absorbing unwanted water and for providing substrate with oxygen.

Should a terrarium be open or closed?

Open – These terrariums are great for direct light or lots of sun. … Closed – These terrariums require very little maintenance. Indirect light is great for these plants. Direct sunlight on a closed terrarium can burn your plants.

How do you heat a terrarium plant?

Heater cable can be buried in the substrate, providing a source of even heating in the vivarium. Similar to a heat pad, heater cable is basically a long, insulated cable that contains a heating element inside. The cable is generally waterproof, and can be buried in substrate or placed in hollow limbs (such as bamboo).

What does the garden gnome do in terrarium?

Garden Gnome Basically like Coral from AbyssRium, except extremely powerful instead of extremely weak. Leveling it up raises oxygen per second you’re away. Level up the Gnome a lot to always come back to a large amount of oxygen.

How do you make soil for a terrarium?

To create a tropical soil, mix two parts sandy potting mix, one part perlite and one part peat moss. Create a different tropical soil by mixing one part soil-less potting mix, one part sand and two parts standard potting soil.

How much soil does a terrarium need?

How Many Inches of Soil Do I Need for a Terrarium? You can get by with just 1/2 inch of soil for every 3 feet. But if you plan to grow larger plants, you’d better increase the depth accordingly. It’s recommended to keep at least 4 inches of soil for every foot, depending upon the size of the container.

Is charcoal good for indoor plants?

Charcoal is naturally anti-microbial, with a great capacity to absorb impurities and other toxins, helping protect soil and roots from bacterial and fungal growth. Perfect for terrariums, cachepots, and other closed planting vessels and suitable for use with all houseplants!

What's the difference between a terrarium and vivarium?

So, what is the difference between a terrarium and a vivarium? Though both environments and can look very similar in terms of plants and earth; terrariums are designed to raise plants, and vivariums are designed primarily to be a habitat for an animal.

How do you keep a small plant in a terrarium?

To keep your terrarium plants neat and tidy, trim them when they become overgrown and have crowded the terrarium, You can also prune their roots to keep them small.

Are Succulents good for terrariums?

Succulents are perfect for terrariums because they grow relatively slowly but the condensation that may build up can kill the little plants if the right medium isn’t used. Line the bottom of the container with fine gravel or rocks. … Space plants at least an inch apart (2.5 cm.) so there is adequate air flow.

How do you keep a terrarium from getting moldy?

Tip #1: Make sure to have a drainage level in a terrarium Because there are no drainage holes in a terrarium, you must catch excess water in the drainage layer. This will prevent it from causing mold and other pests in the soil and on the plants, as a result.

How much light does a terrarium need?

Terrariums love bright INDIRECT sunlight, a place near a bright window but not in beams of the sun. A north-facing window is great. Aim for 4 to 6 hours of indirect sunshine a day. Do not move your plants around to follow the sun or to avoid it.

How do you keep moss alive in a terrarium?

You should aim placing moss into a closed container terrarium. You must water your moss once in few days in summer if it’s in an open terrarium. If moss is in a closed container, mist it once in about 7-12 days during the summer, and even less in winter.

What animals can live in a closed terrarium?

Insects, spiders, scorpions, amphibians, lizards, snakes and turtles are the animal groups most commonly kept in terrariums.