Any clear glass container works — a geometric terrarium, fish bowl, large jar, or cloche. Closed terrariums suit moisture-loving plants like ferns and moss. Open terrariums suit succulents and cacti.
Pour a 3–5cm layer of horticultural pebbles or gravel into the bottom of the container. This prevents roots from sitting in water. Add a thin layer of activated charcoal on top to keep the terrarium fresh.
Add 5–8cm of appropriate potting mix. Use moisture-retaining mix for tropical plants or fast-draining cactus mix for succulents.
Remove plants from their pots and gently loosen the roots. Use a chopstick or long tweezers to dig small holes and position plants. Start with the largest plant and fill in with smaller ones and moss.
Add decorative stones, miniature figurines, or driftwood. Mist lightly with water. For closed terrariums: water sparingly every 2–4 weeks. For open terrariums with succulents: water once every 1–2 weeks.