Traditional succulent terrariums, both open and closed, can be very heavy, so they won't be able to sit on every surface.

Some plants thrive in moisture, calling for a closed terrarium. Other plants, such as succulents and cactus, require an arid environment, calling for an open terrarium to truly make them happy.

You can also make an open terrarium for plants that prefer a cooler or drier environment. Succulents are often seen in terrariums as well – this is possible but requires a lot more care and ...