Create a simple but spooky Halloween terrarium. All you need it a container, a few organic components, and your favorite miniatures.
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Terrariums and fairy gardens are a fun and easy way to add a little green to your home decor. This Halloween terrarium is a fun twist on the trendy craft. They’re great because they don’t need much attention, but you could swap out the decor seasonally if you felt like it.
I created this one to be a bit spooky with a witchy house on a hill overlooking a graveyard.
You might also want to check out my other Halloween ideas.
Halloween terrarium tutorial
- large container
- small river rocks/gravel*
- potting soil with peat*
- sheet moss*
- Halloween miniatures: house, trees, and tombstones
*I purchased a terrarium kit at Calloway’s Nursery last year and used half for another project, but I also found the exact same kit on Amazon.
Putting together a terrarium is pretty easy. The goal is to create a mini-ecosystem where small plants and moss can grow with minimal light and water. The setup is simply layering the main “ingredients” and then adding decorations.
Fill the bottom two inches of the container with small river rocks or gravel.
Sprinkle the charcoal over the rocks, if you’re using it. I did my first terrarium without and my second one with, and I can’t tell much difference. Both have few plants and are misted with water weekly.
Add the potting soil on top of the rock/charcoal layer. Pat the soil down a little so it stays in place, but don’t pack it down tightly. I used my hands to pat it into a hill shape on one side that tapered down to a fairly flat space.
The final step of the organic/messy part is to add the moss. I tore mine into small-ish pieces of different sizes and then ran them under the kitchen sink to soak them. Then I placed them on top of the soil, overlapping edges as needed and filling in any gaps with loose little bits.
After setting up the organic foundation, it’s time to add the Halloween miniatures.
I had an idea of what I wanted the terrarium to look like, so I was thrilled when I found exactly what I needed at Michaels and Jo-Ann. For the stair steps, I picked a few smooth, flat rocks from my backyard patio.
I placed the rocks first, poking them in the gaps between the moss to create a curved stair step section from the flat area to the top of the hill.
I inserted the base of the trees into the moss and wiggled them in so they sat pretty solidly.
Then I set the house and the tombstones on top of the moss. To care for the moss, just mist it with water in a spray bottle once or twice per week when it feels dry.
I love that this project turned out pretty much exactly as I imagined it! Terrariums are easy to put together and so flexible. You could add other plants or different types of moss. If you have different decor or natural items, create any fall or spooky Halloween scene.
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