Black Tower Glass Terrarium 16.5 x 15 x 28 cm / 11 inch$39. 50 US https: ncypgarden. com c glass terrarium planters_0373 High quality geometric terrarium, made of framed transparent glass. It is ideal for raising succulents and cacti. It is also suitable for planting tropical plant varieties, such as mosses, orchids, ferns, and air plants. It is geometric, so it can be placed on any side down according to where it is put and what you are going to grow.