Top 7 Plants for Closed Terrarium
If you're looking to build a beautiful closed terrarium that thrives in a humid, warm environment with indirect light, you need the right plants. In this article, I’ll share the top seven plants for closed terrarium that flourish perfectly in sealed glass ecosystems. These plants not only add natural beauty but also thrive in the unique environment of a closed terrarium.
| Quality | Why it matters |
|---|---|
| Loves humidity | A sealed terrarium stays very humid, so plants must enjoy moist air |
| Stays small | Compact, slow-growing plants will not outgrow the jar quickly |
| Tolerates lower light | Terrariums often sit in bright, indirect light rather than full sun |
| Likes steady moisture | The soil stays evenly damp, so plants must not need to dry out |
| Soft, non-woody growth | Mosses, ferns, and small foliage plants suit the closed, humid space |
What is a Closed Terrarium and Why Choose One?
A closed terrarium is a mini ecosystem sealed in glass, creating a humid tropical environment inside. This self-contained habitat is perfect for plants that love moisture, warmth, and indirect sunlight. Unlike open terrariums, closed terrariums keep moisture circulating, creating ideal conditions for certain tropical plants.
When selecting plants for closed terrarium, it’s important to choose those that can thrive in high humidity and limited airflow. These plants often require similar light and water needs to coexist harmoniously.
Top 7 Plants for Closed Terrarium That Thrive
1. Peperomia hoffmannii
Peperomia hoffmannii is a compact trailing plant native to Central and South America. It features succulent, light green leaves that spread across the soil surface like a lush carpet. As one of the best plants for closed terrarium, Peperomia thrives in humidity ranging from 60% to 90%, making it ideal for the enclosed environment. It prefers indirect light to partial shade and grows quickly, filling your terrarium beautifully in just months.
2. Fittonia Nerve Plant
Fittonia is famous for its striking, vibrant leaf patterns with red, white, or pink veins. This small groundcover plant naturally grows beneath tropical canopies, so it prefers shade or indirect light and evenly moist soil. Fittonia loves high humidity, exactly what a closed terrarium provides. Its easy propagation and colorful foliage make it one of the most popular plants for closed terrarium setups.
3. Philodendron Heartleaf
A low-maintenance tropical evergreen native to South and Central America, the Philodendron Heartleaf thrives in bright indirect light and humid environments. It prefers consistently damp soil and adapts well to terrarium conditions. As one of the versatile plants for closed terrarium, it’s also easy to propagate, perfect for growing a lush terrarium display.
4. Pilea Glauca (Silver Sparkle)
Also known as Grey Baby Tears or Pilea Silver Sparkle, this delicate trailing plant brings charm with tiny, shimmering leaves. It thrives in bright indirect light but tolerates some direct morning sun or grow lights, making it versatile for terrariums. Pilea prefers humidity above 60% and is simple to propagate, making it a great choice among plants for closed terrarium collections.
5. Spider Plant (Chlorophytum comosum)
Spider plants are tough, adaptable, and great for terrariums. They handle a wide range of light - from bright indirect light to shade. They thrive in humid environments and purify the air around them. Their baby plantlets make propagation effortless, ideal for closed terrariums. Spider plant is an excellent example of easy plants for closed terrarium care. Spider Plant Care: Everything You Need to Know
6. English Ivy
English Ivy is a fast-growing evergreen climber or ground cover, perfect for closed terrariums needing a bit of vertical interest. It prefers moderate to high humidity and partial to full shade. Keep in mind it grows aggressively and needs regular pruning. Propagation is easy through cuttings with multiple leaf nodes, making it a common choice among plants for closed terrarium enthusiasts.
7. Purple Heart
Purple Heart stands out with its deep purple trailing foliage. It thrives in moist soil and tolerates full sun to partial shade. Like English Ivy, it grows quickly and needs pruning to stay neat. Its vibrant color adds contrast and beauty to terrariums, plus it’s easy to propagate. Purple Heart is a fantastic option within the group of plants for closed terrarium.
Tips for Combining Plants for Closed Terrarium
For a thriving closed terrarium, group plants for closed terrarium with similar humidity and light needs. Mixing fast growers like English Ivy or Purple Heart with slower growers like Peperomia or Fittonia helps maintain balance and beauty.
Pay attention to plant sizes and growth rates to avoid overcrowding. Regular pruning ensures your terrarium remains healthy and visually appealing.
Why Choose These Plants for Closed Terrarium?
These plants are perfect for beginners and experts alike because they:
- Love the humidity and warmth of closed terrariums
- Require similar indirect lighting
- Are relatively low-maintenance
- Propagate easily to expand your collection
- Add diverse textures, colors, and forms to your miniature ecosystem
Common Challenges with Plants for Closed Terrarium and How to Overcome Them
While plants for closed terrarium are generally well-suited to humid, enclosed environments, there are some common challenges you might face when caring for them. One of the most frequent issues is excess moisture, which can lead to mold or root rot if the terrarium isn’t properly ventilated or if water accumulates at the base. To avoid this, it’s essential to create proper drainage layers using materials like charcoal and pebbles and to monitor watering carefully.
Another challenge is finding the right balance of light. Although many plants for closed terrarium thrive in low to medium indirect light, placing your terrarium near strong direct sunlight can cause overheating and leaf scorch. Use sheer curtains or position your terrarium in bright, filtered light to keep your plants healthy.
Ready to plant yours? See my guides on making a closed terrarium with moss or in a glass jar. And my Plant Care Journal helps you note how your terrarium settles in.
Frequently Asked Questions
What plants are best for a closed terrarium?
Small, humidity-loving plants are ideal, such as fittonia, peperomia, ferns, baby tears, moss, and small pileas. They thrive in the warm, damp, low-light conditions inside a sealed terrarium and stay compact enough not to outgrow it quickly.
What plants should you avoid in a closed terrarium?
Avoid cacti and succulents, which need dry air and quickly rot in a humid, sealed terrarium. Also avoid fast-growing or large plants that will outgrow the space, and anything that needs its soil to dry out fully between waterings.
Can you put moss in a closed terrarium?
Yes, moss is one of the best choices. It loves the constant humidity, stays low and green, and helps create that classic lush, woodland look. Cushion moss and sheet moss both work beautifully as a carpet around your other plants.
How many plants should I put in a closed terrarium?
It depends on the size of your container, but it is best not to overcrowd it. A few small plants with room to grow, plus some moss to fill gaps, usually looks better and stays healthier than a jar packed too full.
Do terrarium plants need fertilizer?
Very little. A closed terrarium is meant to be slow-growing and self-sustaining, so heavy feeding makes plants outgrow the space. If anything, use a very dilute feed occasionally, or none at all, and let the closed system do its work.
Final Thoughts: Create Your Dream Closed Terrarium with These Plants for Closed Terrarium
These plants for closed terrarium are proven winners for humid, enclosed environments. They not only survive but flourish, bringing natural beauty and vibrant life to any space.
Start your terrarium journey with these fantastic plants for closed terrarium, and enjoy the magic of your own miniature indoor garden. Don’t forget to watch the video for a comprehensive walkthrough and inspiring ideas to make your terrarium the centerpiece of your home!
If you want to learn how to make soil mix for closed terrariums at home, click here and check out my article.
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Written by Bojana
Plant lover, grower, and music maker behind Plant House & Garden, with 35+ years of hands-on houseplant experience. Read more about Bojana →
