As with closed terrarium plants, those chosen for open terrariums should be low growing and easy to maintain.
An open terrarium has none of the humidity of a closed terrarium, and is basically an attractive or differently shaped plant pot. However, due to the shape of the vessel it may be difficult to water the plants growing in it, so the best option here are desert plants that thrive in arid environments, and don't need much care. As with closed terrarium plants, those chosen for open terrariums should be low growing and easy to maintain. Cacti and succulents are therefore best for growing in an open terrarium.