Choose a clear glass or acrylic container, with or without a lid. Almost any size will work, as long as it’s big enough to accommodate your plants. Don’t be afraid to experiment.
Spread a 1- to 3-inch layer of charcoal, gravel, or pumice on the bottom of the container for drainage.
Add enough potting mix to surround plant roots. Gently settle the rootball into the soil, then firm it into place. Add more soil as needed.
To water, gently spritz the soil around plants with a spray bottle, taking care not to overwater. If your plants love moisture, cover the terrarium to maintain humidity, but open it occa- sionally to prevent the buildup of condensation. For drought-tolerant plants such as succulents, keep the container open at all times, and water sparingly.