Terrariums: A Miniature Ecosystem in a Glass Container
Terrariums have become increasingly popular in recent years as a low-maintenance way to bring greenery into indoor spaces. These miniature ecosystems housed in glass containers can be a beautiful addition to any home or office, and they require very little attention to thrive. In this article, we will explore the world of terrarium plants, including how to create and care for your own terrarium.
What is a Terrarium?
A terrarium is a sealed or open glass container that contains soil, plants, and sometimes decorative elements such as rocks or figurines. The sealed terrarium creates a self-sustaining ecosystem, with water evaporating from the soil and plants and then condensing on the walls of the container, eventually dripping back down to the soil. This creates a cycle of water that allows the plants to thrive without much intervention from the owner.
Types of Terrariums
There are two main types of terrariums: open and closed. Open terrariums have openings that allow for air circulation, while closed terrariums are sealed with a lid or cork. Closed terrariums require less maintenance since they create their own water cycle, but they can also be more prone to mold or mildew if not properly cared for.
Choosing Plants for Your Terrarium
When selecting plants for your terrarium, it’s important to choose species that thrive in high humidity and low light conditions. Some popular terrarium plants include:
1. Fittonia (Nerve Plant)

Fittonia is a low-growing plant with striking pink or red veins on its leaves. It thrives in high humidity and low light conditions, making it an ideal choice for a terrarium.
2. Pilea (Chinese Money Plant)
Pilea is a popular houseplant known for its round, coin-like leaves. It does well in terrariums with its compact growth habit and low light requirements.
3. Ferns
Ferns are a classic choice for terrariums due to their love of humidity and low light. Maidenhair ferns and bird’s nest ferns are particularly well-suited for terrariums.
4. Moss
Moss is a great addition to any terrarium, adding a lush green carpet to the floor of the container. It thrives in high humidity and low light conditions.
Creating Your Terrarium

To create your terrarium, you will need a glass container, potting soil, small stones or gravel for drainage, activated charcoal (to prevent mold), and your chosen plants. Here’s a step-by-step guide to creating your terrarium:
1. Add a layer of stones or gravel to the bottom of the container for drainage.
This will help prevent water from pooling at the bottom of the container and causing root rot.
2. Add a thin layer of activated charcoal on top of the stones.
This will help keep the terrarium fresh and prevent mold or mildew from forming.
3. Add a layer of potting soil on top of the charcoal.
Make sure the soil is slightly moist but not waterlogged.
4. Plant your chosen plants in the soil.
Arrange them in a pleasing design, taking care not to overcrowd the container.
5. Add decorative elements such as rocks or figurines, if desired.
This step is optional but can add a personal touch to your terrarium.
6. Mist the plants with water to moisten the soil.
Be careful not to overwater, as this can lead to root rot.
Caring for Your Terrarium
Once you have created your terrarium, it requires very little maintenance to thrive. Here are some tips for caring for your terrarium:
1. Place your terrarium in indirect sunlight.
Most terrarium plants prefer low to medium light conditions, so avoid placing your terrarium in direct sunlight, which can cause the plants to burn.
2. Water your terrarium sparingly.
Since terrariums create their own water cycle, you should only need to water them every few weeks. Check the soil moisture before watering to avoid overwatering.
3. Prune and trim your plants as needed.
Over time, your plants may outgrow the terrarium or become leggy. Trim them back to maintain a tidy appearance.
4. Keep an eye out for pests.
Although terrariums are relatively pest-resistant, you may occasionally encounter mealybugs or spider mites. If you notice any pests, remove them by hand or with a gentle spray of insecticidal soap.
5. Clean the glass container periodically.
Over time, the glass container may accumulate dust or mineral deposits. Wipe it clean with a damp cloth to keep your terrarium looking its best.
Conclusion
Terrariums are a beautiful and low-maintenance way to bring greenery into indoor spaces. With the right plants and care, you can create a miniature ecosystem in a glass container that will thrive for years to come. Whether you choose an open or closed terrarium, the key is to select plants that thrive in high humidity and low light conditions. With a little creativity and attention to detail, you can enjoy the beauty of nature in your own home or office with a terrarium.