Closed terrariums are a captivating and fascinating way to bring a touch of nature indoors. These self-sustaining ecosystems can thrive for decades with minimal maintenance, even without adding water.

In this post, we’ll explore the science behind closed terrariums and delve into the secrets of their remarkable longevity.

What is Closed Terrain?

What is Closed Terrain?

Closed terrain is a term used in a variety of contexts, including geology, skiing and snowboarding, and military terminology.

In geology, closed terrain refers to an area of land surrounded by water or mountains and is therefore not accessible to vehicles or people. This could include areas such as valleys, canyons, and plateaus. Closed terrain can be formed by a variety of geological processes, such as erosion, uplift, and volcanic activity.

In skiing and snowboarding, closed terrain is an area of the mountain that is not open to the public. This could be due to a variety of reasons, such as avalanche danger, hazardous conditions, or maintenance work. Closed terrain is usually marked with ropes or signs, and skiers and snowboarders are not allowed to enter these areas.

In military terminology, closed terrain is an area of land that is difficult to traverse, such as a dense forest or a swamp. This terrain can be used to protect military installations or make it difficult for an enemy to advance. Closed terrain can also be used to ambush or surprise an enemy.

What is an example of closed Terrian?

Here are some examples of closed terrain:

A national park that is not open to the public
A military base
Construction site
An area of land that is contaminated with hazardous waste.
A private property that is not open to the public

In general, closed terrain is any area of land not open to the public for safety or security reasons.

David Latimer’s Closed Terrarium: Created in 1960, this closed terrarium has survived for over 60 years without any added water, showcasing the resilience of these miniature ecosystems.

Kew Gardens’ Closed Terrarium: Established in 1977, this closed terrarium at Kew Gardens in London has thrived for over 40 years, demonstrating the effectiveness of proper plant selection and terrarium maintenance.

Closed terrariums offer a fascinating glimpse into the wonders of miniaturized ecosystems, demonstrating the delicate balance of life within a self-sustaining environment. Their ability to survive for decades with minimal maintenance highlights the adaptability and resilience of plants and the intricate interplay of natural processes that sustain life.

How do closed terrariums survive?

Closed terrariums are self-sustaining ecosystems that thrive in a sealed environment.

They create a miniature water cycle where plants release water vapor through transpiration, which condenses on the terrarium’s walls and drips back into the soil, providing hydration for the plants.

This cycle is fueled by sunlight, which plants use for photosynthesis to produce food and oxygen.

The oxygen they release is then consumed by the plants and any other organisms living in the terrarium, such as small invertebrates or insects.

What is the reason for plants’ survival in a closed terrarium?

The plants’ survival in a closed terrarium is due to the unique microclimate created by the sealed environment.

The constant humidity and relatively stable temperature conditions provide an ideal environment for certain types of plants, particularly ferns, mosses, and small succulents.

Again, the limited air circulation also helps to conserve moisture and prevent the spread of diseases.

How long can a sealed ecosystem last?

A sealed terrarium can last for many years, even decades, with minimal maintenance. The key is to select plants that are well-suited to the terrarium environment and to maintain proper drainage and ventilation.

Overcrowding or introducing incompatible plants can disrupt the balance of the ecosystem and lead to problems.

Can worms live in a closed terrarium?

Yes, worms can live in a closed terrarium, but it is important to choose the right type of worm and to ensure that the terrarium is large enough and has the appropriate soil conditions.

Earthworms, for example, are not suitable for closed terrariums as they break down the soil too quickly and can disturb the delicate balance of the ecosystem. Smaller, detritivorous worms, such as springtails or whiteworms, are better suited for closed terrariums as they feed on decaying organic matter and help to aerate the soil.

The Science of Closed Terrariums

Closed terrariums are fascinating miniature ecosystems that recreate a balance like the natural world. They provide a unique opportunity to observe plant growth and the delicate interplay of life within a confined space.

Understanding the science behind closed terrariums allows us to create and maintain thriving environments for our plant companions.

The Water Cycle

The key to a closed terrarium’s success lies in the self-sustaining water cycle. Plants absorb water from the soil through their roots and release it through transpiration, where it evaporates into the terrarium’s atmosphere.

As the air cools, this moisture condenses on the terrarium’s walls and eventually drips back down into the soil, rehydrating the plants. This cycle continues indefinitely, maintaining a humid environment that is essential for many plant species.

Gaseous Exchange

Plants, like all living organisms, require oxygen and release carbon dioxide. In a closed terrarium, this gaseous exchange is crucial for maintaining a healthy ecosystem.

As plants photosynthesize, they absorb carbon dioxide and release oxygen, replenishing the air for both the plants and any other organisms living in the terrarium.

This delicate balance ensures that the terrarium’s atmosphere remains suitable for life.

Soil Composition

The soil in a closed terrarium plays a critical role in supporting plant growth and maintaining healthy conditions. A well-draining soil mix is essential to prevent waterlogging, which can lead to root rot and other problems.

The soil should also provide adequate nutrients for the plants to thrive, while not being overly rich as this can encourage excessive growth and disrupt the terrarium’s balance.

Temperature and Light

Closed terrariums should be placed in locations with indirect sunlight or undergrow lights specifically designed for indoor plants. Excessive direct sunlight can scorch the plants, while insufficient light can hinder their growth.

The temperature range should be moderate, avoiding extremes that can stress the plants.

How to Maintain Closed Terrariums

Proper maintenance is essential for ensuring the long-term health of a closed terrarium. Regular observation is crucial to detect any signs of problems, such as pests, diseases, or excessive moisture.

Pruning overgrown plants helps maintain the terrarium’s aesthetics and prevents overcrowding.

Cleaning the terrarium’s walls removes condensation and allows light to penetrate the soil for healthy plant growth.

How Can a Closed Terrian Enrich the Ecosystem?

Beyond the plants, a closed terrarium can also be home to a variety of small invertebrates, such as springtails, isopods, and millipedes.

These organisms play an important role in breaking down organic matter, aerating the soil, and contributing to the terrarium’s nutrient cycle. Introducing these beneficial creatures further enhances the terrarium’s ecosystem and adds to its ecological intrigue.

Closed terrariums offer a captivating glimpse into the wonders of the natural world, allowing us to observe plant life in a miniature, self-sustaining ecosystem.

By understanding the science behind closed terrariums, we can create and maintain thriving environments for our plant companions, fostering a connection to the delicate balance of life within.

How to Create a Closed Native Terrarium

Creating a closed native terrarium is a fun and rewarding project that allows you to bring a slice of nature indoors.

It’s a great way to showcase indigenous plants from your local area and enjoy the beauty of a self-sustaining mini-ecosystem.

Here’s a step-by-step guide on how to create your closed native terrarium:

Gather Materials:

Container: Choose a clear glass container with a wide opening to allow for easy planting and access. Glass jars, vases, or fishbowls are suitable options.

Soil: Use a well-draining potting mix specifically designed for terrarium plants. Avoid using garden soil, as it may contain pests or diseases.

Drainage Layer: Gravel or pebbles can be used to create a drainage layer at the bottom of the terrarium, preventing waterlogging and root rot.

Charcoal: Activated charcoal can be added to the drainage layer to help remove impurities and maintain air quality in the terrarium.

Native Plants: Select a variety of native plants that are suitable for the terrarium environment. Ferns, mosses, succulents, and small flowering plants are good choices.

Decorative Elements: Consider adding natural elements like rocks, driftwood, or moss to enhance the terrarium’s aesthetic appeal.

Tools: You’ll need a spoon or trowel for planting, a mister or spray bottle for watering, and gloves to protect your hands from dirt.

Creating the Terrarium:

Clean the Container: Wash the container thoroughly with soap and water to remove any debris or residue. Allow it to dry completely before proceeding.

Create the Drainage Layer: Add a layer of gravel or pebbles about 1-2 inches deep to the bottom of the container. This will help prevent waterlogging and promote healthy root growth.

Add Activated Charcoal (Optional): Sprinkle a thin layer of activated charcoal over the drainage layer. This will help purify the air and remove any impurities that could harm the plants.

Prepare the Soil Mixture: Fill the container with the well-draining potting mix, leaving about an inch of space at the top. Gently moisten the soil with a mister or spray bottle.

Planting the Native Plants: Carefully remove the native plants from their pots and place them in the terrarium, arranging them according to your desired composition. Ensure the roots are covered with soil but not too deep, as this can restrict growth.

Mist the Plants: Gently mist the plants with water to provide them with initial hydration. Avoid overwatering, as this can lead to root rot.

Add Decorative Elements (Optional): Place rocks, driftwood, or moss around the plants to enhance the terrarium’s visual appeal.

Seal the Container: Place the lid or cover securely on the terrarium. This will create a closed environment where the plants can thrive.

Maintaining Your Closed Native Terrarium

Placement: Position the terrarium in a location with indirect sunlight or under a grow light specifically designed for indoor plants. Avoid direct sunlight, as it can scorch the plants.

Watering: Monitor the moisture level of the soil regularly. Mist the plants when the soil feels slightly dry to the touch. Avoid overwatering, as this can lead to root rot.

Cleaning: Clean the condensation from the terrarium walls occasionally to allow light to penetrate the soil and prevent algae growth.

Pruning: Prune overgrown plants to maintain the terrarium’s aesthetics and prevent overcrowding.

Observation: Regularly observe the terrarium for any signs of pests, diseases, or excessive moisture. Address any issues promptly to maintain a healthy ecosystem.

Enjoy your beautiful and self-sustaining closed native terrarium! It will bring a touch of nature into your home and provide a fascinating glimpse into the delicate balance of life within a miniature ecosystem.

How a closed Terrian can live for Decades with No Water Added

Closed terrariums are self-sustaining ecosystems that can survive for decades with minimal maintenance, even without adding water. This is due to creating a unique microclimate within the sealed container that mimics the natural water cycle.

The Water Cycle in a Closed Terrarium

Transpiration: Plants absorb water from the soil through their roots and release it through transpiration, where it evaporates into the terrarium’s atmosphere.

Condensation: As the air within the terrarium cools, the evaporated water vapor condenses on the terrarium’s walls.

Dripping: The condensed water droplets eventually coalesce and form larger droplets, which eventually drip back down into the soil, providing hydration for the plants.

Factors Contributing to Long-Term Survival

Plant Selection: Choosing plants that are adapted to humid environments and have low water requirements is crucial for the terrarium’s longevity.

Soil Composition: A well-draining soil mix that retains moisture without becoming waterlogged provides the optimal growing conditions for the plants.

Proper Drainage: A drainage layer at the bottom of the terrarium allows excess water to escape, preventing root rot and maintaining a healthy balance.

Sealed Environment: Keeping the terrarium sealed prevents water from evaporating out, allowing the water cycle to continue indefinitely.

Indirect Sunlight: Placing the terrarium in a location with indirect sunlight provides adequate light for photosynthesis without subjecting the plants to excessive heat or drying.

Minimal Maintenance: Regular observation and occasional misting are typically sufficient to maintain the terrarium’s health.

Conclusion

Closed terrariums offer a captivating glimpse into the wonders of miniaturized ecosystems, demonstrating the delicate balance of life within a self-sustaining environment. Their ability to survive for decades with minimal maintenance highlights the adaptability and resilience of plants and the intricate interplay of natural processes that sustain life.