When entering the world of indoor nature projects, it is easy to confuse the terms terrarium and vivarium. Both typically use glass enclosures and natural elements, but they serve different purposes depending on what is being kept inside.
The difference between a vivarium and a terrarium is that a terrarium is designed for plants only, while a vivarium is built to support animals alongside plants.
While the two setups may appear similar at first glance, their intended use determines how they are designed, equipped, and maintained. Terrariums focus on creating stable conditions for plant growth, often requiring minimal intervention once established. Vivariums, by contrast, are constructed to meet the environmental needs of animals, which introduces additional considerations such as heating, lighting, ventilation, and regular maintenance.
Understanding this distinction helps clarify which type of enclosure is best suited to different goals, available space, and levels of ongoing care.
| Feature | Terrarium | Vivarium |
|---|---|---|
| Primary focus | Plants | Animals with supporting plants |
| Maintenance | Low | Moderate to high |
| Equipment needed | Minimal | Lighting, heating, ventilation |
| Typical use | Decorative display | Animal habitat |
| Beginner-friendly | Yes | Depends on species |
A terrarium is a glass or transparent container designed mainly for growing plants. They are commonly seen as small-scale indoor gardens that bring greenery into indoor living spaces. They are often decorative and easy to maintain once they are properly set up.
There are two main types:
Closed terrariums work like a self-sustaining ecosystem. Water evaporates, condenses on the glass, and drips back into the soil. This cycle keeps humidity levels stable, which is ideal for mosses, ferns, and tropical plants. Open terrariums, on the other hand, suit succulents and cacti that need airflow.
Common plants in glass terrariums include:
Terrariums are usually kept plant-focused, though a few people add tiny invertebrates like springtails or isopods to help manage mould and waste. These small additions support balance without turning the setup into a full vivarium.
A simple example is creating a mini rainforest in a closed glass terrarium. Activated charcoal and stones are layered for drainage, followed by soil, moisture-loving plants, and light misting. Once sealed, the container maintains its own water cycle with very little ongoing input.
Terrariums remain popular because they combine low maintenance with a natural look. They allow a slice of nature to be enjoyed indoors without the effort of a full garden.
A vivarium is any enclosed space used to keep and observe living organisms. Unlike a simple plant display, a vivarium is designed to mimic natural habitats and support animals such as reptiles, amphibians, insects, or even small aquatic species.
Key conditions inside a vivarium are usually controlled. This can include lighting, humidity, temperature, and substrate. Managing these factors creates a stable environment that helps the animals thrive and behave more naturally.
Most vivaria focus on animals, while plants serve as decoration or enrichment. For example, live plants can provide shade, hiding spots, or humidity regulation. This makes the enclosure more functional and visually appealing.
Vivaria come in different forms:
A simple example is a vivarium designed for dart frogs. This requires a moist substrate, live plants, a misting system, and secure ventilation. Regular maintenance would involve monitoring humidity, feeding insects, and cleaning waste. This kind of setup shows how vivaria balance animal care with habitat design.
In our experience at Miyagi Bonsai, the most successful vivarium and terrarium builds share one thing: the enclosure was chosen to suit the inhabitant, not the other way around. Starting with the species and working outward, substrate, humidity, lighting, and size produce a setup that works from day one rather than one that requires constant adjustment.
When vivariums and terrariums are compared, the main differences come down to what they contain, how they are maintained, and the level of complexity involved. Both are types of ariums, but one focuses on plants while the other supports animals alongside plants.
A terrarium usually provides a closed, moisture-retentive environment. The glass walls and sealed lid trap humidity, making it ideal for ferns, mosses, and other plants that thrive in damp conditions. Some terrariums are open-topped, but most are designed to recycle water through condensation and evaporation.
A vivarium, on the other hand, is built around the needs of animals. Reptiles, amphibians, and invertebrates often require specific temperature gradients, controlled airflow, and precise humidity levels. This means heating lamps, ventilation systems, and misting devices are often part of the setup.
Unlike terrariums, vivariums rarely function as sealed systems. Instead, they balance plant life with animal care, creating a more dynamic ecosystem where conditions must be actively managed.
Terrariums are relatively low-maintenance. Watering is usually only needed occasionally, alongside trimming overgrown plants and wiping down the glass if condensation builds up too heavily. They are often self-sustaining; dead foliage may occasionally need to be removed, but intervention is minimal once the balance is established.
Vivariums require much more hands-on care. Animals produce waste, so regular cleaning and substrate replacement are required. Feeding schedules, water changes, and monitoring for mould or pests add to the workload.
Heating, lighting, and humidity must also be adjusted regularly to keep the habitat stable. This higher level of input makes vivariums less forgiving than terrariums, especially for beginners.
The purpose of a terrarium is primarily decorative. It functions as a miniature garden under glass, designed to showcase plants in a stable, controlled environment. Because terrariums focus on plant growth alone, they typically require minimal equipment and limited ongoing intervention once established.
A vivarium serves a more functional role by providing a suitable habitat for animals such as reptiles, amphibians, or invertebrates. Supporting animal life increases complexity, as vivariums must account for temperature regulation, humidity control, ventilation, and lighting tailored to the species being kept.
This difference in purpose directly affects setup and maintenance requirements. Terrariums are simple to assemble using basic materials such as a glass container, soil, and plants. Vivariums often involve specialised equipment, species-specific planning, and higher long-term costs, making them better suited to keepers with experience or a clear understanding of animal care needs.
Overlap often occurs when an animal is added to a terrarium. For example, a closed plant terrarium becomes a vivarium the moment a reptile, like a gecko, is introduced.
At that point, the keeper must add heating, ventilation, and regular cleaning routines. What was once a low-input decorative garden now shifts into a managed ecosystem with higher demands. This highlights how the line between terrarium and vivarium can change depending on the inhabitants.
Choosing between a terrarium and a vivarium depends on what you want to keep, how much time you have for maintenance, and your level of experience. The options below cover the most common enclosure types.
Open terrarium
Vivarium (general)
As a general rule: start with a closed terrarium if you are new to enclosures. It is the most forgiving setup and requires the least equipment. Move to a vivarium once you have a clear species in mind and have researched its specific care needs.
Both terrariums and vivariums need attention to water, light, and temperature, but the level of care differs depending on whether only plants are being grown or animals are also supported. Feeding and fertilising routines also vary, as plants and animals have very different needs.
In terrariums, watering is usually minimal. Closed terrariums often recycle moisture through condensation, which means water may only need to be added once every few weeks. Open terrariums dry out faster, especially with succulents or cacti, so occasional but careful watering is important to avoid root rot.
A closed terrarium is the most forgiving watering setup for beginners; once balanced, it largely manages itself.
Vivariums require more frequent moisture management. Amphibians like frogs or salamanders depend on humid conditions, so misting once or twice daily may be necessary. Reptiles such as chameleons often prefer drip systems or water bowls. Automated misting or fogging systems are common in larger vivariums to maintain stable humidity for both plants and animals.
A simple guide:
For first-time vivarium keepers, an automated misting system removes the guesswork from humidity management and reduces the risk of under or over-misting.
Terrariums rely on light primarily for plant growth. You can place them near windows for indirect sunlight or use LED grow lights to provide the right spectrum for photosynthesis. Low-light plants like ferns and mosses thrive indoors, while succulents need brighter conditions.
For a low-maintenance decorative terrarium, a basic LED grow light positioned above the enclosure for 10–12 hours daily is sufficient for most mosses, ferns, and tropical plants.
Vivariums are more complex. Reptiles such as bearded dragons and chameleons need UVB lighting to metabolise calcium and stay healthy. Heat lamps may also be required to create basking spots. At the same time, live plants inside need full-spectrum lighting to maintain growth. Balancing both requirements is key, so many setups combine UVB bulbs, heat sources, and plant-friendly LEDs.
A quick comparison:
Always research the UVB requirements of your specific species before purchasing lighting; incorrect UVB provision is one of the most common causes of health problems in captive reptiles.
For terrariums, room temperature is usually enough. Most tropical plants do well between 18–24°C, while succulents prefer slightly warmer and drier conditions. Since there are no animals, you don’t need to create temperature gradients.
Vivariums often require precise temperature control. Reptiles such as bearded dragons need a basking area around 35–40°C and a cooler zone between 24–27°C. Amphibians usually prefer cooler, moist environments, so heat mats, ceramic heaters, or thermostats may be required. Creating a gradient allows animals to regulate their body temperature naturally.
Key point:
A thermostat is an essential purchase for any vivarium housing reptiles; it prevents overheating and ensures the temperature gradient remains stable without manual adjustment.
Terrariums need very little feeding. Many closed terrariums recycle nutrients in the soil, so fertiliser is rarely required. If growth slows, a diluted liquid fertiliser can be added once or twice a year. Overfeeding plants can cause algae or mould, so less is better.
Vivariums involve both plant and animal care. Animals may eat live insects, pellets, or fish food, depending on the species. For example, chameleons eat crickets and mealworms, while aquatic animals may need specific diets. Plants in vivariums can also benefit from occasional fertiliser, but it must be safe for animals. Some keepers also add microfauna like springtails, which recycle waste and support a bioactive system.
Start with the inhabitant. Whether you are building a planted terrarium or a fully equipped vivarium, every decision, substrate, lighting, humidity, and enclosure size flows from what you intend to keep inside it. A closed terrarium for mosses and ferns needs almost nothing beyond a glass container and the right soil. A vivarium for a chameleon needs UVB lighting, a misting system, live plants, and a carefully managed temperature gradient from day one.
In our experience, the most common mistake is choosing the enclosure before the species. Buying a vivarium and then deciding what to put in it leads to mismatched setups and unnecessary costs. Choose your plant or animal first, research its needs thoroughly, and then build or buy accordingly.
Miyagi Bonsai stocks a carefully chosen range of terrariums, vivariums, and enclosure accessories, including closed terrarium kits, open glass containers, substrates, and planted display options, with next working day UK delivery available on most orders. The products and recommendations in this guide reflect what we stock, use and see working for our customers every day. We are rated 5 stars across over 100 Google reviews, and our team is on hand by email and phone if you have any questions about choosing the right enclosure, setting it up, or caring for what’s inside it.
Understanding the difference between a vivarium and a terrarium often raises practical questions about habitat design, maintenance, lighting, and suitable plants or animals. The FAQs below address the most common comparisons to help clarify how each enclosure works and which setup is best for different needs.
The main differences between a terrarium and a vivarium lie in habitat purpose and environmental control. A terrarium is designed primarily for plants and often relies on passive humidity and room temperatures. A vivarium is built to support animals, requiring controlled heating, lighting, ventilation, and species-specific conditions.
The distinct features of a vivarium compared to a terrarium and an aquarium relate to what each enclosure supports. A terrarium focuses on plants, an aquarium is dedicated to aquatic life, and a vivarium supports animals alongside plants. Vivariums often combine land, water, and controlled environmental systems.
Plants and animals suited for a vivarium include reptiles, amphibians, and invertebrates that require controlled humidity, temperature, and lighting. Common examples include dart frogs, geckos, and chameleons, supported by live plants for cover and enrichment. Terrariums are better suited to mosses, ferns, and other plant-only displays.
The maintenance of a vivarium differs from terrarium care due to the presence of animals. Vivariums require regular feeding, waste removal, environmental monitoring, and equipment management. Terrariums are generally low-maintenance, often needing only occasional watering, plant trimming, and condensation control once established.
The benefits of choosing a vivarium over a terrarium for reptiles and amphibians include proper life support and environmental control. Vivariums provide regulated temperature gradients, humidity, UV lighting, and space for natural behaviours. These features support animal health and wellbeing, which cannot be achieved in a plant-focused terrarium.
Considerations for humidity and lighting differ significantly between a vivarium and a terrarium. Terrariums rely mainly on plant lighting and passive moisture retention. Vivariums require carefully controlled humidity, UV lighting, and heat sources to meet animal needs, often using specialised equipment and monitoring systems.
A terrarium is significantly easier to maintain than a vivarium. A closed terrarium, once established, can be largely self-sustaining; the water cycle recycles moisture through condensation, and intervention is needed only to trim overgrown plants or remove dead foliage. A vivarium requires regular cleaning to remove animal waste, consistent monitoring of temperature and humidity, feeding schedules, and periodic substrate replacement. For anyone new to enclosures, a terrarium is the recommended starting point before moving to the more demanding requirements of animal care.
Technically, the moment a gecko is added to a terrarium, it becomes a vivarium; the enclosure must now meet the animal’s welfare needs rather than just supporting plant growth. Leopard geckos and crested geckos are among the most popular species for beginner vivarium keepers. Leopard geckos need a ground-level setup with a heat mat, hiding spots, and a temperature gradient. Crested geckos prefer an arboreal setup with height, live plants, and moderate humidity. A standard plant terrarium is not suitable for keeping geckos without modification; heating, ventilation, and appropriate substrate must all be added.
A vivarium is a broad term for any enclosed habitat designed for animals, which includes terrariums, aquariums, and paludariums as subcategories. A paludarium specifically combines land and water zones within a single enclosure, making it suitable for semi-aquatic species that need access to both environments. Examples include dart frogs, newts, crabs, and certain fish species alongside terrestrial plants. Paludariums are the most complex enclosure type to build and maintain, requiring water filtration, careful management of the land-water boundary, and species-compatible planting throughout both zones.
For a first closed terrarium, a container between 10 and 30 litres is a practical starting size. Small enough to manage easily, it still provides enough volume to establish a balanced plant ecosystem. Larger containers are more forgiving; they retain humidity more consistently and allow more planting variety, but they require more substrate and plants to fill effectively. Avoid very small containers (under 5 litres) as these are difficult to balance and dry out or over-humidify quickly. If buying a terrarium, Miyagi Bonsai’s team can advise on the right size for the plants and setting you have in mind.
The main differences between a terrarium and a vivarium lie in habitat purpose and environmental control. A terrarium is designed primarily for plants and often relies on passive humidity and room temperatures. A vivarium is built to support animals, requiring controlled heating, lighting, ventilation, and species-specific conditions.
The distinct features of a vivarium compared to a terrarium and an aquarium relate to what each enclosure supports. A terrarium focuses on plants, an aquarium is dedicated to aquatic life, and a vivarium supports animals alongside plants. Vivariums often combine land, water, and controlled environmental systems.
Plants and animals suited for a vivarium include reptiles, amphibians, and invertebrates that require controlled humidity, temperature, and lighting. Common examples include dart frogs, geckos, and chameleons, supported by live plants for cover and enrichment. Terrariums are better suited to mosses, ferns, and other plant-only displays.
The maintenance of a vivarium differs from terrarium care due to the presence of animals. Vivariums require regular feeding, waste removal, environmental monitoring, and equipment management. Terrariums are generally low-maintenance, often needing only occasional watering, plant trimming, and condensation control once established.
The benefits of choosing a vivarium over a terrarium for reptiles and amphibians include proper life support and environmental control. Vivariums provide regulated temperature gradients, humidity, UV lighting, and space for natural behaviours. These features support animal health and wellbeing, which cannot be achieved in a plant-focused terrarium.
Considerations for humidity and lighting differ significantly between a vivarium and a terrarium. Terrariums rely mainly on plant lighting and passive moisture retention. Vivariums require carefully controlled humidity, UV lighting, and heat sources to meet animal needs, often using specialised equipment and monitoring systems.
A terrarium is significantly easier to maintain than a vivarium. A closed terrarium, once established, can be largely self-sustaining; the water cycle recycles moisture through condensation, and intervention is needed only to trim overgrown plants or remove dead foliage. A vivarium requires regular cleaning to remove animal waste, consistent monitoring of temperature and humidity, feeding schedules, and periodic substrate replacement. For anyone new to enclosures, a terrarium is the recommended starting point before moving to the more demanding requirements of animal care.
Technically, the moment a gecko is added to a terrarium, it becomes a vivarium; the enclosure must now meet the animal’s welfare needs rather than just supporting plant growth. Leopard geckos and crested geckos are among the most popular species for beginner vivarium keepers. Leopard geckos need a ground-level setup with a heat mat, hiding spots, and a temperature gradient. Crested geckos prefer an arboreal setup with height, live plants, and moderate humidity. A standard plant terrarium is not suitable for keeping geckos without modification; heating, ventilation, and appropriate substrate must all be added.
A vivarium is a broad term for any enclosed habitat designed for animals, which includes terrariums, aquariums, and paludariums as subcategories. A paludarium specifically combines land and water zones within a single enclosure, making it suitable for semi-aquatic species that need access to both environments. Examples include dart frogs, newts, crabs, and certain fish species alongside terrestrial plants. Paludariums are the most complex enclosure type to build and maintain, requiring water filtration, careful management of the land-water boundary, and species-compatible planting throughout both zones.
For a first closed terrarium, a container between 10 and 30 litres is a practical starting size. Small enough to manage easily, it still provides enough volume to establish a balanced plant ecosystem. Larger containers are more forgiving; they retain humidity more consistently and allow more planting variety, but they require more substrate and plants to fill effectively. Avoid very small containers (under 5 litres) as these are difficult to balance and dry out or over-humidify quickly. If buying a terrarium, Miyagi Bonsai’s team can advise on the right size for the plants and setting you have in mind.
