When thinking of terrariums, there are two choices. Either leave the terrarium open to the elements or close it up with a stopper. If you aren’t an experienced gardener, it won’t be obvious why you’d choose one terrarium technique over another. Many people interested in terrariums are experimenting with different methods. Here’s everything you need to know about owning your own terrarium.
What’s the difference between a closed and an open terrarium?
Originally, the concept of terrariums involved a completely sealed glass jar, but over time and through numerous experiments, it evolved into the open terrarium technique. The difference between the two is simple, really, but the method you opt for has a big impact on your plants. Closed terrariums have a lid or stopper. They are mostly closed to outside air and opened to add water. They can be permanently sealed to create a self-sustaining climate within the bottle.
Open terrariums, however, are the opposite; they are permanently open to the conditions in a room. Open terrariums should be placed in living rooms or rooms with drier air, as they are suitable for plants that do not require high humidity. The bottle for an open terrarium needs to provide some closure with high sides, but have an open spot for ventilation. Whether to choose a terrarium that is open or one that’s sealed depends primarily on the plants you choose and their care requirements.
What are the benefits of a closed terrarium?
No terrarium is better than the other; it all depends on personal preference. There are benefits to owning either of these terrariums. The benefits of owning a closed terrarium:
- Needs very little intervention
- Can create their own water cycle
- They are self-sustaining

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What are the benefits of an open terrarium?
Any successful terrarium is just a matter of choosing the right plants to experience its full potential and benefits. The benefits of choosing an open terrarium are:
- Open terrariums have better airflow
- Easier to manage water levels
- They absorb nutrients and water from the air
- Are versatile than closed terrariums
Neither type is necessarily better; it is just about choosing the right plant for the container and providing moisture as needed by the one you selected. Terrariums require some trial and error to perfect them.

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ALSO SEE: MAKE YOUR OWN TERRARIUMS IN JUST 5 STEPS
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