Open vs Closed Terrariums Do you know the difference? An open terrarium allows airflow and works best for plants that prefer drier conditions like succulents and cacti. A closed VEVOR 24 Inch Tall Planter Pots 9.70 Lbs Weight, 2 Sets Ferrisland Glass Terrarium Plants with Lid Montrose Planter Ideas for Changing Out Pots: Winter Plants that Work Better than Others Christie's Fine Gardening Adding Earthworms to Potted Plants: Should it be Done? Flourishing Plants