Slow-growing cacti require virtually no care at all, making them perfect for open terrariums.
Slow-growing cacti require virtually no care at all, making them perfect for open terrariums. Use a variety of cacti types and mulch with sand to create a desert landscape, or mix with succulents for a softer look. Bear in mind that cacti can't survive in a humid environment so ensure your open terrarium has a large opening and plenty of airflow to ensure your display lasts.