A Simple and Beautiful Moss Terrarium for Beginners: Bryum Moss and Caladium

Today I’m sharing a simple terrarium project that combines Bryum moss and caladium. It is easy to assemble, requires very few materials, and is a good choice for beginners who want to create a beautiful moss terrarium.

Materials

Plants:

• Caladium

• Bryum moss

Rocks:

• Small black lava rock granules, approximately 2–9 mm

• One large piece of black lava rock

• Two or three smaller pieces of black lava rock

Planting Tutorial

Step 1: Arrange the Lava Rocks

First, place the large piece of lava rock inside the planting tray. Arrange the smaller rocks around it.

Leave a small open space between the rocks for planting the caladium later.

Once you are satisfied with the arrangement, pour the small lava rock granules around the larger rocks. These evenly sized granules will help stabilize the larger pieces and keep them in position.

Step 2: Separate and Plant One Caladium

Remove the caladium from its nursery pot.

A small nursery pot of caladium often contains several individual tubers, with each tuber producing its own leaves and roots. Once you remove the root ball from the pot, the tubers are usually easy to separate gently.

You only need one tuber with its attached leaves, roots, and a small amount of the original potting soil for this project. The remaining plants can be repotted and used for other projects.

Place the selected caladium in the open space you left between the lava rocks. If the space has already been filled with small lava rock granules, simply scoop some of them out first.

There is no need to add extra soil. Keep the small amount of original potting soil attached to the caladium’s roots, place it into the opening, and gently press the surrounding material to secure it.

Step 3: Add the Moss

Place the Bryum moss directly around the base of the caladium and over the surfaces of the lava rocks.

That is all you need to do.

The finished arrangement is simple, natural-looking, and colorful. The bright pink caladium contrasts beautifully with the fresh green moss and dark volcanic rock.

Do You Need Soil Under the Moss?

Some people may ask:

Does the moss need soil underneath it? Do I need clay to hold it in place?

No.

The moss is very light, and the slopes in this arrangement are gentle. You can simply place the moss directly onto the rocks.

I know that some people have plenty of soil available and still worry that moss will not grow well without it. But it really is not necessary here. Moss does not need much soil.

Just place it directly on the surface. Over time, the moss will naturally attach itself to the lava rock.

The moss in this project has continued to grow and look better over time. I will take some updated photos in a few days to show how it looks now.

Does the Moss Need Fertilizer?

No. The moss does not need fertilizer.

Adding fertilizer is unnecessary and may even create problems inside a small, humid terrarium.

How Should You Water It?

When you first plant the caladium, pour a small amount of water into the tray. Approximately 200 ml is enough for this arrangement.

After that, regular misting is usually sufficient.

This planted tray is placed inside the gold house-shaped glass terrarium. Because the terrarium retains humidity well, the water vapor does not escape quickly.

I know that some people worry that a small amount of water will not soak deeply enough into the planting area. However, that is not necessary for this type of setup.

Moss mainly benefits from moisture in the air and on its surface, rather than a large amount of water draining deep into the bottom of the container.

Regular light misting helps keep the moss moist while the terrarium maintains the humid environment it needs.

building video will be uploaded later.