If you're new to terrariums, one of the first questions you'll encounter is whether to choose an open or closed terrarium. While both create beautiful indoor gardens, they support different types of plants and require different levels of care.

Open Terrariums

Open terrariums have an opening that allows air to circulate freely. They are best suited for plants that prefer dry conditions and lower humidity.

Best plants:

• Succulents
• Cacti
• Air Plants

Watering: Every 2–4 weeks
Humidity: Low
Maintenance: Moderate

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Closed Terrariums

Closed terrariums mimic a miniature rainforest. Moisture is recycled through a natural water cycle, creating a humid environment for tropical plants.

Best plants:

• Fittonias
• Mosses
• Mini Ferns
• Peperomias
• Begonias

Watering: Every 1–3 months (depending on the vessel)
Humidity: High
Maintenance: Low

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Which Terrarium Is Better?

For most beginners, closed terrariums are often the easiest choice because they require less watering and naturally maintain humidity levels. Open terrariums are ideal for succulent lovers and spaces with bright light.

At Terrart NYC, closed ecosystems are our most popular terrarium style because they are low-maintenance, self-sustaining, and beautifully showcase tropical plants and mosses.

Whether you choose an open or closed terrarium, both offer a unique way to bring nature indoors and create your own miniature landscape.