STEP 4: Add soilAgain, cactus and succulents need a special soil compared the most other plants, so be sure to get the appropriate bag depending on which plants you're using. Add enough soil so the plants roots will have plenty of room to fit and then grown. Aim for a depth slightly greater than the height of the plant's pot.
- A clear glass jar, vase, bowl, glass, or whatever interesting glass container you have on hand
- Rocks, pebbles or recycled glass chunks
- Activated charcoal (sometimes called activated carbon)
- Potting soil appropriate for your plants
- Moss (optional)
- Figurines, sticks or decorative items (optional)
- Various small plants
- A scoop, spoon or shovel
Source your containers from a thrift store or an antique store, or just scrounge around your house for an old jar. Even simple jelly jars or canning jars can make beautiful terrariums. They can be left open or closed—it’s totally up to you. All other supplies can be bought at your local gardening center.
As for the plants, the sky is the limit, but generally speaking look for small plants that you can fit inside your jar and won’t grow too tall. Some plants will have multiple stems so you can break them up even further. To ensure that your terrarium will be successful, keep succulents and cacti together, and keep fern and tropical plants together, because they require different amounts of water and soil. You’ll want cactus soil for the succulents and regular old potting soil for everything else. The rocks are used as a false drainage layer while the activated charcoal helps keep the terrarium healthy, and the moss can be used for decoration and to help soak up and retain water.