A sealed glass terrarium is one of the calmest things you can keep at home. Once it settles, it makes its own weather. Moisture rises through the day, gathers on the glass, then falls again like rain. Here is how to build your first one from start to finish, comfortably in an afternoon.
What you will need
- A clean glass vessel with a wide enough opening for your hand or a long spoon
- Fine gravel or clay pebbles for drainage
- A little activated charcoal to keep the water sweet
- A free draining substrate, ideally a terrarium or aroid mix
- Small tropical plants that enjoy humidity, plus a piece of moss
- A rock or a small branch for height
Building it up, layer by layer
- Drainage. Add two or three centimetres of gravel so roots never sit in standing water.
- Charcoal. Scatter a thin layer over the gravel. It keeps everything fresh inside a closed world.
- Substrate. Add enough soil to plant into, a little deeper at the back to give the scene some depth.
- Hardscape. Set your rock or branch first, then plant around it. This is what makes a terrarium look like a real landscape rather than a bowl of plants.
- Plants and moss. Tuck roots in firmly, then press moss over any bare soil. Brush off stray grains with a soft brush.
- A gentle mist. Lightly spray, watch for thin condensation, then close the lid.
For the first week, lift the lid for ten minutes a day if the glass fully fogs over. After that, a closed terrarium can go weeks between waterings. If you would rather skip the sourcing, every Glass Wild kit arrives with the layers measured out and a short build guide in the box.
