Many people are familiar with aquatic plants used in freshwater aquariums, but did you know that many of these plants can also grow outside of the water? This makes them a great choice for terrariums as well.
When grown outside of water, these plants keep much of their natural beauty and versatility. They can be attached to driftwood, rocks, or even placed in the background of a terrarium. By using these plants creatively, you can add a new dimension to your nature-inspired setup and create a lush, visually appealing display.
Why Use Semi-Aquatic Plants in a Terrarium?
Using semi-aquatic plants in a terrarium offers several advantages:
1. They Are Hardy and Adaptable
Many of these plants are grown in humid conditions before they are sold. This means they are already adapted to the moisture levels found in terrariums, making them easier to maintain.
2. They Grow Slowly and Stay Small
Most aquarium plants are bred to be small and slow-growing, which is perfect for terrariums. This means you won’t have to trim them as often, and they won’t overgrow the space.
3. They Look More Vibrant Out of Water
Because there is more carbon dioxide in the air than in water, many aquatic plants develop richer colors and fuller leaves when grown in a terrarium. This can create an even more attractive display compared to when they are underwater.
Things to Keep in Mind
While these plants can thrive in terrariums, there are some important factors to consider:
- Humidity Is Key – These plants need high humidity to survive. If the air is too dry, they will wither and die. A closed terrarium is best for keeping moisture levels high.
- Proper Drainage Is Essential – If water collects at the bottom, it can lead to root rot and other problems. Make sure your terrarium has good drainage.
- Placement Matters – Some plants do well when planted in moist soil, while others need to be attached to surfaces like rocks or wood. Understanding the needs of each plant will help them thrive.
How to Plant Semi-Aquatic Plants in a Terrarium
1. Attaching Epiphytic Plants to Hard Surfaces
Some plants, like Anubias and Bucephalandra, cannot have their roots buried. Instead, they need to be attached to wood or rocks. You can do this using:
- Plant-safe glue
- Tying them with thread
- Nestling them into crevices with a bit of moist moss for support
2. Planting in the Substrate
Other plants, like Cryptocoryne, can be planted in terrarium soil as long as it stays moist. Make sure to check the care needs of each plant before planting.
3. Using Moss for Extra Moisture
Semi-aquatic mosses, like Java Moss and Christmas Moss, need constant moisture to stay healthy. You can place them on rocks or wood and keep them damp by misting regularly. If possible, placing them on top of moist sphagnum moss can help maintain their moisture levels.
Best Semi-Aquatic Plants for a Terrarium
Here are some of the best aquatic plants that can also grow outside of water in a terrarium:
1. Bolbitis (Asian Water Fern)
Bolbitis plants have delicate, fern-like leaves that add texture to a terrarium. The “Mini Bolbitis” variety is especially useful in small setups because of its slow growth and compact size. It can be attached to wood or rocks for the best effect.
2. Cryptocoryne
Cryptocoryne plants naturally grow in areas where water levels change, so they are well adapted to both aquatic and terrestrial environments. They can be attached to rocks or planted directly in moist soil. The small Cryptocoryne Parva is a good choice for attachment, while Cryptocoryne Wendtii Green is a great beginner-friendly option for planting in soil.
3. Anubias
Anubias plants are popular for their thick, dark green leaves. They provide a striking contrast against other plants. However, their roots must not be buried, so they need to be attached to hard surfaces. Smaller varieties like Anubias Nana Petite are easier to work with in terrariums.
4. Bucephalandra
Bucephalandra plants are well-loved for their colorful, textured leaves. These slow-growing plants attach easily to rocks or driftwood, making them an excellent choice for terrariums. Some species, like Bucephalandra Kedagang Mini, are especially suited for small enclosures.
5. Mosses (Java Moss and Christmas Moss)
Mosses can transform a terrarium by adding a soft, natural feel. Java Moss and Christmas Moss can cover wood, rocks, or backgrounds, creating a lush environment. However, they need very high humidity to stay green and healthy. Regular misting or using a misting system can help them thrive.
Tips for Keeping Your Semi-Aquatic Plants Healthy
- Misting Regularly – Since these plants need high humidity, misting them daily (or using a misting system) will help keep them fresh and vibrant.
- Choosing the Right Setup – A closed terrarium holds moisture better, while open terrariums may need additional misting or a fogging system.
- Providing Good Airflow – While humidity is important, some airflow is needed to prevent mold and rot. Finding the right balance is key.
- Experimenting with Water Features – If you want to get creative, you can incorporate a small waterfall or fogger to keep moisture levels high and create a dynamic look.
Final Thoughts
Using semi-aquatic plants in a terrarium is a fantastic way to bring new life to your setup. These plants offer beauty, versatility, and unique planting opportunities that can elevate your design. Whether you’re attaching them to driftwood, rocks, or planting them in the substrate, they can help you create a lush and visually appealing terrarium.
By selecting the right plants, maintaining proper humidity, and ensuring good drainage, you can enjoy a stunning terrarium filled with greenery that flourishes in both water and air. Try experimenting with these plants in your next project and see how they transform your space!
